Definition: Convex polygon A convex polygon is a polygon in which the measure of each interior angle is less than 180º.

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1 Definition: Convex polygon A convex polygon is a polygon in which the measure of each interior angle is less than 180º.

2 Definition: Convex polygon A convex polygon is a polygon in which the measure of each interior angle is less than 180º.

3 Concave polygons

4 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

5 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

6 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

7 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

8 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

9 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

10 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

11 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

12 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

13 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

14 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

15 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

16 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

17 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

18 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

19 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

20 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

21 Definition: Diagonal A diagonal of a polygon is any segment that connects two nonconsecutive (nonadjacent) vertices of the polygon.

22 Definition: Quadrilateral A quadrilateral is a polygon with four sides.

23 Definition: Quadrilateral A quadrilateral is a polygon with four sides.

24 Definition: Quadrilateral A quadrilateral is a polygon with four sides.

25 Definition: Quadrilateral A quadrilateral is a polygon with four sides.

26 Definition: Quadrilateral A quadrilateral is a polygon with four sides.

27 Definition: Quadrilateral A quadrilateral is a polygon with four sides.

28 Definition: Quadrilateral A quadrilateral is a polygon with four sides.

29 Definition: Parallelogram A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel.

30 Definition: Rectangle A rectangle is a parallelogram in which all four angles are congruent.

31 Definition: Rectangle A rectangle is a parallelogram in which all four angles are congruent. equiangular parallelogram

32 Definition: Rhombus A rhombus is a parallelogram in which all four sides are congruent.

33 Definition: Rhombus A rhombus is a parallelogram in which all four sides are congruent. equilateral parallelogram

34 Definition: Square A square is a parallelogram in which all four sides and all four angles are congruent.

35 Definition: Square A square is a parallelogram in which all four sides and all four angles are congruent. regular parallelogram

36 Definition: Trapezoid A trapezoid is a quadrilateral with exactly one pair of parallel sides.

37 Definition: Trapezoid A trapezoid is a quadrilateral with exactly one pair of parallel sides. Definition: Trapezoid A trapezoid is a quadrilateral with at least one pair of parallel sides.

38 Definition: Isosceles trapezoid An isosceles trapezoid is a trapezoid in which the two sides that are not parallel are congruent. Those two sides are called the legs.

39 Definition: Right trapezoid A right trapezoid is a trapezoid with two right angles.

40 Definition: Kite A kite is a quadrilateral with two distinct pairs of congruent adjacent sides.

41 Definition: Kite A kite is a quadrilateral with two distinct pairs of congruent adjacent sides. Definition: Kite A kite is a quadrilateral with two pairs of congruent adjacent sides.

42 quadrilateral parallelogram trapezoid kite isosceles trapezoid right trapezoid rectangle square rhombus

43 Four-sided polygons are called quadrilaterals. Some special types of quadrilaterals are: parallelograms, rectangles, rhombi, squares, trapezoids, isosceles trapezoids, right trapezoids, and kites.

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