Term
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Definition
| (n- 2)180 n is the number of sides. |
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Term
| Polygon Exterior Angle Sum |
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Definition
| the sum of the exterior angle measures, one angle at each vertex, of a convex polygon is 360 degrees. |
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Term
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Definition
| opposite sides are congruent. |
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Term
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Definition
| opposite angles are congruent. |
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Term
| Quadrilateral supplementary angles |
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Definition
| consecutive angles are supplementary. |
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Term
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Definition
| diagonals bisect each other. |
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Term
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Definition
| if a pair of opposite sides of a quadrilateral are parallel and congruent then |
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Term
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Definition
| if both pair of opposite sides of a quadrilateral are congruent then |
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Term
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Definition
| if both opposite angle of a quadrilateral are congruent then |
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Term
| parallelogram supplementary |
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Definition
| a quadrilateral is supplementary to both of its consecutive angle then |
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Term
| quadrilateral isosceles trapezoid |
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Definition
| then each pair of base angles are congruent. |
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Term
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Definition
| if a trapezoid has one pair of congruent base angels then the trapezoid isosceles. |
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Term
| trapezoid congruent isosceles |
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Definition
| a trapezoid is isosceles if and only if diagonals are congruent. |
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Term
| trapezoid midsegment theorem |
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Definition
| the midsegment of a trapezoid is parallel to each base then the trapezoid theorem length is one half the sum of the bases. |
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