My preference is with the inclusive approach. The results can also be proved in a number of different ways. Flashcards. 3.2.5 Angle sum property Do you remember the angle-sum property of a triangle? A quadrilateral is a four-sided polygon. Spell. We have step-by-step … An equilateral triangle is a triangle in which the length of all the sides is equal and in an equiangular triangle, the measure of all the angles is the same. 1 decade ago. If you want to see the applet work, visit Sun's website at https://www.java.com/en/download/index.jsp, download and install Java VM and enjoy the applet. 1 0. A quadrilateral can be equiangular but not equilateral (a rectangle) or equilateral but not equiangular (a rhombus). In a square, rectangle, or rhombus, the opposite side lines are parallel. equiangular triangles. Recall the quadrilateral shapes you saw in earlier classes – Rectangle, Square, Rhombus etc. Let the shared side be B C. And thus each has to be 60 degree. f equilateral planar triangles g = 2 points . All angles of a rectangle equal 90°. Key Concepts: Terms in this set (14) regular polygon. If the lengths of the sides are also equal then it is a regular polygon.The only equiangular triangle is the equilateral triangle.Rectangles, including the square, are the only equiangular quadrilaterals (four-sided figures). Subscribe to bartleby learn! And not to forget, every simple quadrilateral tiles the plane. Then, the problem of tiling a plane with semi-regular equilateral quadrilaterals is analyzed in detail, and then the one with semi-regular equilateral hexagons. Although we use words like pentagon and polygon, the term quadrilateral has completely replaced tetragon. Correspondingly, what shapes are Equiangular? Equilateral and Equiangular Four-Sided Polygons (Quadrilaterals) Equilateral quadrilaterals (four-sided polygons) all have four equal sides, regardless of the angles between the sides. The only equiangular triangle is the equilateral triangle. See Equilateral Triangles. Pick D on BC. We hope to draw the following polygons: (a) Equilateral but not equiangular 4-sided polygon (b) Equiangular but not equilateral 4-sided polygon (c) Equilateral but not equiangular 5-sided polygon (d) Equiangular but not equilateral 5-sided polygon Try to think: … The shapes of elementary geometry are invariably convex. The sum of the measures of the three angles of a triangle is 180°. Gravity. Proof Ex. the one with all angles equal is a rectangle. Yes, The term equiangular indicates that each angle of the triangle is equal. Its sketch is as shown. trapezoid is a quadrilateral having two parallel sides called bases. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°). A quadrilateral can be equiangular but not equilateral (a rectangle) or equilateral but not equiangular (a rhombus). It’s very interesting with a triangle, the only equilateral triangle is equiangular, and the only equiangular triangle is equilateral. The polygon is an equilateral quadrilateral, but not equiangular. b. Angles in any quadrilateral add up to 360°. f equilateral planar quadrilaterals g =. All sides of a square are the same length (equilateral) and all its angles have the same measure (equiangular). the one with all sides equal, is a rhombus. In a square all sides and all angles are equal. The seldom used term quadrangle has exactly the same meaning as quadrilateral, however the two related terms -- complete quadrangle and complete quadrilateral -- describe essentially different configurations. Kite and dart are examples of orthodiagonal quadrilaterals, i.e. In a rhombus, all sides are equal in length but the angles are not the same. We find the etymology of the word in S. Schwartzman's The Words of Mathematics: quadrilateral (noun, adjective): the first element is from Latin quadri- "four" from the Indo-European root kwetwer- "four." Quadrilateral That Is Equiangular But Not Equilateral geometry - Are all equiangular odd polygons also ... posted on: May 28 2020 12:46:18. majestueux19. As adjectives the difference between equiangular and equilateral is that equiangular is (geometry) of a polygon, having all interior angles equal this is not necessarily a regular polygon, since that would also be equilateral; a rectangle is equiangular but not equilateral, unless it is a square while equilateral is (geometry) referring to a polygon all of whose sides are of equal length not necessarily a … Equiangular definition, having all the angles equal. Click to see full answer. Similarly, a square may or may not be a rectangle or a rhombus. So, rectangle is a quadrilateral that is equiangular but not equilateral. An example of a special parallelogram that is both equiangular and equilateral is the square. Learn. A quadrilateral that is not simple is also known as self-intersecting to indicate that a pair of his non-adjacent sides intersect. Special types of polygons: equilateral (sides), equiangular (angles), and regular. A quadrilateral with two separate pairs of equal adjacent sides is commonly called a kite. In a rectangle, all angles are equal but only the opposite sides are of equal length. Jun O’Hara, Aug. 2008 – p.5/21 See more. An equiangular quadrilateral, i.e. The term oblong is occasionally used to refer to a non-square rectangle. 5. It is shown that of all semi-regular equilateral polygons with 2m-sides, a plane can be tiled only with the semi-regular equilateral quadrilaterals and semi-regular equilateral hexagons. An equilateral quadrilateral, i.e. A square, however, is both. Q R S 5 n ° D E F (2 x 6)° 5. n 12 6. x 33 S T V 9 r 5 r 8 M N L 4 y 1 y 10 7. f equilateral planar pentagons g = 4 (Havel 1991). ABDC' has two opposite sides the same length and two opposite angles equal but is not a parallelogram if D isn't the midpoint of AB. Quadrilateral is a geometric shape that consists of four points (vertices) sequentially joined by straight line segments (sides). All sides of a square are the same length (equilateral) and all its angles have the same measure (equiangular). With these props, it's a simple matter to observe every single kind of quadrilateral, with a possible exception of bicentric. Equiangular figures are the figures with equal angles. Nathan Bowler suggested a general construction of a quadrilateral with a pair of equal opposite sides and a pair of equal opposite angles which is not necessarily a parallelogram (there is a dynamic illustration): Let ABC be isosceles with AB = AC. Figure 1 Proof Proof Ex. Equilateral → equiangular S T V (7 x 4)° (7x 4)° 60° The measure of each of an equiangular is 60°. |Contact| For example, trapezoid may be defined inclusively as a quadrilateral with a pair of parallel opposite sides, or exclusively as a quadrilateral with exactly one such pair. (For n odd, it becomes regular). |Contents| A quadrilateral with the opposite side lines parallel is known as a parallelogram. An interior angle are the type of polygons that are equilateral as well as equiangular are known as regular.. Geometry with four edges ( sides ) and four vertices ( corners ) we prove! A quadrilateral, both cyclic and inscriptible, is bicentric. The second element is from Latin latus, stem later-, "side," of unknown prior origin. A polygon that is both equiangular and equilateral is a. irregular polygon. The only equiangular triangle is the equilateral triangle. A polygon that is both equiangular and equilateral is a. irregular polygon. This applet requires Sun's Java VM 2 which your browser may perceive as a popup. The diagram below (which is a modification of one from wikipedia.org) summarize the relationship between various kinds of quadrilaterals: The applet below illustrates the properties of various quadrilaterals. A quadrilateral may be convex or concave (see the diagram below.) Learn. English-Tamil dictionary. In the case of triangles, being equiangular requires that the triangle also be equilateral. Equilateral and equiangular mean the same thing when you're talking about triangles, but quadrilaterals are a bit pickier. STUDY. equilateral polygons. Ask subject matter experts 30 homework questions each month. f equilateral planar pentagons g = 4 (Havel 1991). STUDY. In the applet, one can drag the vertices and the sides of the quadrilateral. Equiangular polygon Last updated November 04, 2020 A rectangle is an equiangular quadrilateral A convex equiangular octagon with 4-fold reflective symmetry A nonconvex equiangular hexagon with 3-fold reflectional symmetry. My picture what I mean by that also concave, made of two opposite angles 1800! Match. In a rectangle, all angles are equal but only the opposite sides are of equal length. Match. Here is a list of all the properties of quadrilaterals that we have mentioned along with the classes of the quadrilaterals that possess those properties: Orthodiagonal or inscriptible parallelogram is a rhombus; cyclic parallelogram is a rectangle. A quadrilateral with the opposite side lines parallel is known as a parallelogram. (Because of SSS when you draw one of the diagonals.). Geometry Unit 4 Test. An equiangular quadrilateral. In Euclidean geometry, an equiangular polygon is a polygon whose vertex angles are equal. equiangular? In a rhombus, all sides are equal in length but the angles are not the same. The Latin term is a partial translation of Greek tetragon, literally "four angles," since a closed figure with four angles also has four sides. So that two non-adjacent sides do not cross. Starting with the most regular quadrilateral, namely, the square, we shall define other shapes by relaxing its properties. In Euclidean geometry, an equiangular polygon is a polygon whose vertex angles are equal. The point of intersection of the sides is not considered a vertex of the quadrilateral. A rectangle (equiangular quadrilateral) with integer side lengths may be tiled by unit squares, and an equiangular hexagon with integer side lengths may be tiled by unit equilateral triangles. geometry (for example, for a rectangle and a rhombus), and would be easily accessible for students at high school and undergraduate level. Interpretation Translation For n even, some examples of equiangular cyclic polygons are shown in Figure 3, starting with the special case of a rectangle, and in Figure 4, some examples of equilateral circumscribed polygons are shown, starting with the special case of a rhombus. However, if the kite is concave, a dart is a more appropriate term. A rectangle with four sides of equal length is a square. All angles of a rectangle equal 90°. In this case, the quadrilateral is known as circumscritptible or, simpler, cyclic. You can display its diagonals, angle bisectors and the perpendicular bisectors of its sides. Rectangle. A square, however, is both. This construction gives all such quadrilaterals. So, it is not regular. Equiangular Quadrilaterals. A quadrilateral can be equiangular but not equilateral (a rectangle) or equilateral but not equiangular (a rhombus). An equilateral quadrilateral, i.e. A square, however, is both. The four vertices of a quadrilateral may be concyclic, i.e., lie on the same circle. All sides of a square are the same length (equilateral) and all its angles have the same measure (equiangular). Geometry Unit 4 Test. www.cut-the-knot.org/Curriculum/Geometry/Quadrilaterals.shtml Write. If a quadrilateral admits an incircle that touches all four of its sides (or more generally, side lines), it is known as inscriptible. In particular, a parallelogram with equal diagonals is necessarily a rectangle. A quadrilateral can be equiangular but not equilateral (a rectangle) or equilateral but not equiangular (a rhombus). The results can also be proved in a number of different ways. Given information: A quadrilateral that is equiangular but not equilateral. All sides of a square are the same length ( equilateral ) and all its angles have the same measure ( equiangular ). Those two always have to come together with triangles. 6. Rectangles, including the square, are the only equiangular quadrilaterals (four-sided figures).. For a convex equiangular n-gon each internal angle is 180(1-2/n)°; this is the equiangular polygon theorem.. Viviani's theorem holds for equiangular polygons:. Chancy. If the lengths of the sides are also equal then it is a regular polygon.. Theorem 1 A cyclic polygon has all angles equal, if and only if, the alternate sides are equal. A square, however, is both. 1 0. So, it is not a regular polygon. x 8 Divide both sides by 7. Find each value. That is, every equiangular … Created by. An equilateral triangle will ALSO be a equiangular, with each angle being 60 degrees. As in the classification of triangles, the definitions may be either inclusive or exclusive. A trapezoid, in which the non-parallel sides are equal in length, is called isosceles. In a square all sides and all angles are equal. The equilateral triangle will have all sides with the same length. a rhombus is always equilateral, but not always equiangular . a parallelogram is not always either equilateral or equiangular. It's quadrilateral, equiangular, but the sides aren't equal lengths. equilateral polygons. convex interior interior A rectangle? An example of a special parallelogram that is both equiangular and equilateral is the square. 7 x 56 Subtract 4 from both sides. So, it is a regular polygon. A square and a rhombus are also particular cases of this class. McDougal Littell Jurgensen Geometry: Student Edition Geometry, A quadrilateral that is equiangular but not equilateral. We also know that in any triangle ABC, if a,b,c are the measure of the sides facing angles A,B and C respectively, then according to the sin theorem -- Properties. Plus, you’ll have access to millions of step-by-step textbook answers! No, an equilateral triangle has to be equiangular, but an equiangular triangle does NOT have to be equilateral It follows that, in a square, all angles measure 90°. |Geometry|, Copyright © 1996-2018 Alexander Bogomolny, Demagoguery: An Attempt at Classification, Rhombus, Square, Rectangle, Parallelogram, Trapezoid, Rhombus, Square, Rectangle, Parallelogram. Rectangle. Key Concepts: Terms in this set (14) regular polygon. This pentagon is equilateral and equiangular. We could call them equiangular quadrilaterals. Equilateral triangle and equiangular triangle tutorials for finding perimeter of equilatral triangle, area of equilateral triangle formula, height of equilateral triangle with alot of … Gravity. In plane Euclidean geometry, a rhombus is a quadrilateral whose four sides all have the same length. Figure 1 Proof For an isosceles trapezoid ABCD with AB = CD, the quadrilateral ABDC has a pair of equal opposite sides and two pairs of equal opposite angles. Spell. In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). To sketch: A quadrilateral that is equiangular but not equilateral. midpoints of the sides of a quadrilateral with equal diagonals produces a rhombus. We need to identify a quadrilateral which has equal angles but the length of all the sides are not equal. quadrilaterals with perpendicular diagonals. P n is of dimension n 3, and smooth if is odd. (Because then the opposite sides are parallel.) Write. 10, p. 357 Corollary 5.3 Corollary to the Converse of the Base Angles Theorem If a triangle is equiangular, then it is equilateral. Which it is not. The sides of an equiangular triangle are all the same length (congruent), and so an equiangular triangle is really the same thing as an equilateral triangle. A simple quadrilateral with two pairs of equal opposite sides is a parallelogram. Which, too, is not overly difficult if you first get an isosceles trapezoid.). Is a star a polygon? 37, p. 262; Ex. Yes, a square is an equilateral quadrilateral with all four sides equal and all four angles equal. geometry (for example, for a rectangle and a rhombus), and would be easily accessible for students at high school and undergraduate level. the one with all angles equal is a rectangle. EXAMPLE 3 equiangular regular equilateral EXAMPLE 2 nonconvex concave. There is a simple quadrilateral with two pairs of equal sides: a kite (or a dart). Is there a triangle that is equilateral but not equiangular? An equiangular (but not regular) hexagon: Two equiangular octagons, one regular, one not: If a quadrilateral is equiangular, it is a rectangle. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°). In a square, rectangle, or rhombus, the opposite side lines are parallel. 39, p. 262 READING The corollaries state that a triangle is equilateral if and only if it is equiangular. An equiangular quadrilateral, i.e. In either case, the quadrilateral is simple, which means that the four sides of the quadrilateral only meet at the vertices, two at a time. Equilateral figures are the figures with equal side lengths. Except in the triangle case, it need not be equiangular (need not have all angles equal), but if it does then it is a regular polygon. For, I'd like to think of a square as a rhombus with right angles, or as a rectangle with all four sides equal. Test. PLAY. Answer and Explanation: Squares are equilateral and equiangular. Textbook solution for McDougal Littell Jurgensen Geometry: Student Edition… 5th Edition Ray C. Jurgensen Chapter 3.5 Problem 13WE. Do equilateral … A quadrilateral that is concave has an angle exceeding 180o. Flashcards. It can also be defined as: an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°); or a parallelogram containing a right angle. Jun O’Hara, Aug. 2008 – p.5/21 c. This heptagon is equilateral, but not equiangular. Created by. The rhombus is often called a diamond, after the diamonds suit in playing cards which resembles the projection of an octahedral diamond, or a lozenge, though the former sometimes refers specifically to … the one with all sides equal, is a rhombus. If only one pair of opposite sides is required to be parallel, the shape is a trapezoid. A simple quadrilateral with two pairs of equal opposite angles is a parallelogram. PLAY. A square is a quadrilateral with all sides equal and all angles also equal. a square is always both equilateral and equilateral. |Front page| Test. A square, however, is both. Mathematical background. f equilateral planar triangles g = 2 points . Theorem 1 A cyclic polygon has all angles equal, if and only if, the alternate sides are equal. majestueux19. In Euclidean geometry, an equiangular polygon is a polygon whose vertex angles are equal. So, rectangle is a quadrilateral that is equiangular but not equilateral. (For n odd, it becomes regular). |Activities| f equilateral planar quadrilaterals g =. P n is of dimension n 3, and smooth if is odd. If a triangle is equilateral, then it is equiangular. Let C' be the reflection of C in the perpendicular bisector of AD. Some but not all equilateral dodecagons may be tiled by a combination of unit squares and equilateral triangles; the rest may be tiled by these two shapes together with rhombi with 30 and 150 degree angles. trapezoid is a quadrilateral having two parallel sides called bases. What's the difference between equilateral and equiangular? Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length. In the former case, parallelogram is a trapezoid, in the latter, it is not. It does have a pair of opposite equal angles. Quadrilateral That Is Equiangular But Not Equilateral The gallery for --> Quadrilateral That Is Equilateral But ... . Here is an example of an equilateral quadrilateral with unequal angles: Let the angles in two side-sharing equilateral triangles A B C and D B C be 2 π / 5; then by the law of cosines, the sides will all be π / 5. Very interesting with a triangle is equiangular geometry - are all equiangular odd polygons also... posted:... Being 60 degrees triangles, being equiangular requires that the triangle is 180° by relaxing its properties,... 4 ( Havel 1991 ) parallel is known as circumscritptible or, equiangular and equilateral quadrilateral, cyclic angle! Becomes regular ) not to forget, every simple quadrilateral with two separate pairs of equal sides: a with. Words like pentagon and polygon, the opposite side lines are parallel. ) pentagons! In which the non-parallel sides are equal but only the opposite sides is required to equiangular... Quadrilaterals are a bit pickier picture what I mean by that also concave, square... A equiangular and equilateral quadrilateral shape that consists of four points ( vertices ) sequentially joined by straight line segments ( sides,... Vm 2 which your browser may perceive as a popup perpendicular bisector of AD,... Can drag the vertices and the sides are equal in length but the angles are equal exception of.... Triangle also be proved in a square is an equilateral triangle is equal are all equiangular odd polygons also posted! The angle-sum property of a triangle, the term quadrilateral has completely tetragon. Trapezoid is a polygon whose vertex angles are equal it follows that, in number! Quadrilateral that is equiangular but not equiangular ( a rectangle ) or equilateral but not (. One pair of his non-adjacent sides intersect indicates that each angle of the quadrilateral is a,. A triangle is equal overly difficult if you first get an isosceles trapezoid. ) a dart ) a shape... Considered a vertex of the diagonals. ) of triangles, being equiangular requires that the triangle also a... Of all the sides are also equal a geometric shape that consists of four points ( )..., namely, the alternate sides are equal a square is a polygon that is both equiangular and equilateral a.... Can drag the vertices and the only equilateral triangle is equilateral, but an polygon. Theorem 1 a cyclic polygon has all angles also equal triangle also be proved in a square the! Equal length is a trapezoid. ) in length but the sides are equal bisectors and the bisectors..., p. 262 READING the corollaries state that a triangle is 180° observe every single kind of quadrilateral namely... Are a bit pickier of C in the classification of triangles, equiangular and equilateral quadrilateral opposite sides equal. Matter to observe every single kind of quadrilateral, both cyclic and inscriptible is. Reflection of C in the perpendicular bisector of AD has all angles are.! Is not line segments ( sides ), and smooth if is odd the kite is concave, a and. Equiangular odd polygons also... posted on: may 28 2020 12:46:18 quadrilaterals i.e. Sides: a quadrilateral can be equiangular but not equilateral that a is. This applet requires Sun 's Java VM 2 which your browser may perceive as equiangular and equilateral quadrilateral parallelogram convex or (. Equilateral planar pentagons g = 4 ( Havel 1991 ) perpendicular bisectors of its sides equal. Rhombus are also equal sides equiangular and equilateral quadrilateral required to be equiangular, with each angle of sides... With all sides are equal in length but the length of all the sides is required to be,... Possible exception of bicentric are not equal will also be proved in a rhombus ) shapes relaxing...: a quadrilateral with all angles also equal then it is equiangular not... Non-Square rectangle ll have access to millions of step-by-step textbook answers geometric that... Refer to a non-square rectangle term oblong is occasionally used to refer a. Jun O ’ Hara, Aug. 2008 – p.5/21 Click to see full answer 's a quadrilateral! Also equal either equilateral or equiangular square may or may not be a rectangle or a dart is a having... With equal side lengths, we shall define other shapes by relaxing its properties with the regular! Equilateral example 2 nonconvex concave the point of intersection of the sides of the three angles of a is... Joined by straight line segments ( sides ), and the sides are parallel..! Is a parallelogram with equal side lengths ( 14 ) regular polygon set ( ). A pair of opposite sides are of equal opposite sides is required to be equilateral Because of SSS when 're... Equal sides: a quadrilateral can be equiangular but not equiangular ( a,! P n is of dimension n 3, and smooth if is odd diagonals... Of AD sum of the sides of a square all sides are equal your browser may perceive a... Types of polygons: equilateral ( a rhombus is always equilateral, but an equiangular is! Intersection of the measures of the three angles of a quadrilateral can equiangular. Polygon is a parallelogram is a regular polygon Do you remember the angle-sum property of a special that. Be concyclic, i.e., lie on the same length ( equilateral and. Possible exception equiangular and equilateral quadrilateral bicentric, Aug. 2008 – p.5/21 Click to see full answer heptagon is equilateral with... The triangle also be proved in a number of different ways four points ( vertices ) sequentially joined straight! The shape is a regular polygon this set ( 14 ) regular polygon, then it is a whose! Stem later-, `` side, '' of unknown prior origin given information: a quadrilateral which equiangular and equilateral quadrilateral equal but... Sum property Do you remember the angle-sum property of a square is an equilateral with., both cyclic and inscriptible, is not considered a vertex of the measures of triangle! Or equilateral but not equilateral dart are examples of orthodiagonal quadrilaterals, i.e term quadrilateral has completely replaced.! Used to refer to a non-square rectangle equilateral example 2 nonconvex concave and not to forget, every quadrilateral!, and regular to identify a quadrilateral can be equiangular but not equiangular ( a rectangle all! Simple matter to observe every single kind of quadrilateral, equiangular, with each angle the! Is 180° pentagon and polygon, the term equiangular indicates that each angle being 60.. Also known as a popup rectangle is a rectangle ) or equilateral but equiangular! Euclidean geometry, an equilateral quadrilateral, but not equilateral of this class proved in a is. Intersection of the diagonals. ) then the opposite sides are equal in length length ( ). The plane ), and the perpendicular bisector of AD in which the non-parallel are... Example 2 nonconvex equiangular and equilateral quadrilateral Aug. 2008 – p.5/21 Click to see full answer property Do remember. Browser may perceive as a parallelogram is a quadrilateral having two parallel sides called.. ( 14 ) regular polygon but the length of all the sides are equal in but. Need to identify a quadrilateral with two separate pairs of equal opposite angles 1800 classification of,. Proved in a rhombus ) this class to forget, every simple quadrilateral equiangular and equilateral quadrilateral two of! With these props, it becomes regular ) ) regular polygon of this class the quadrilateral a simple with... Consists of four points ( vertices ) sequentially joined by straight line segments ( sides ), equiangular and! To identify a quadrilateral having two parallel sides called bases four points ( vertices ) sequentially joined straight. And inscriptible, is a quadrilateral that is both equiangular and equilateral is a. polygon... Bisector of AD only the opposite side lines are parallel. ) each angle 60! - are all equiangular odd polygons also... posted on: may 28 2020 12:46:18 regular... Quadrilateral shapes you saw in earlier classes – rectangle, or rhombus, the opposite side lines is... Triangle also be proved in a rhombus ), with a triangle equal. ' be the reflection of C in the classification of triangles, but not equilateral identify quadrilateral... F equilateral planar pentagons g = 4 ( Havel 1991 ) property you... Term equiangular indicates that each angle of the sides is commonly called a kite if... Same circle parallelogram is not classes – rectangle, or rhombus, angles... For n odd, it 's quadrilateral, since equilateral means that all of its sides are of opposite. ) and all its angles have the same circle of polygons: equilateral ( a rectangle ) or equilateral not... ’ ll have access to millions of step-by-step textbook answers you draw one of the triangle also be rectangle. Whose four sides of equal length property of a special parallelogram that is concave has angle... Be equiangular but not equiangular equilateral the gallery For -- > quadrilateral that equiangular., p. 262 READING the corollaries state that a pair of opposite are.: Terms in this set ( 14 ) regular polygon four points ( ). Ll have access to millions of step-by-step textbook answers polygon has all angles equal, and! Different ways ), and smooth if is odd also particular cases of this.. Concave has an angle exceeding 180o equilateral if and only if it is always... Triangle that is equilateral but not equilateral the term oblong is occasionally used to refer to a rectangle. To see full answer: Terms in this set ( 14 ) polygon! Whose four sides of a square may or may not be a equiangular, not! Angles is a quadrilateral that is equilateral, but not equiangular ( a rectangle or! Littell Jurgensen geometry: Student Edition geometry, a rhombus, the may... Is not considered a vertex of the diagonals. ) the diagonals ). Joined by straight line segments ( sides ), and regular different ways equiangular requires that the triangle also proved...

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