| A | B |
|---|
| exterior angle | an angle formed by a side of a polygon and an extension of a side |
| corollary | follows directly from a theorom |
| equilateral | all sides are congruent |
| isosceles | at least two sides are congruent |
| scalene | no sides are congruent |
| equiangular | all angles are congruent |
| convex | no diagonal contains points outside the polygon |
| concave | a diagonal contains points outside the polygon |
| equilateral polygon | all sides are congruent |
| equiangular polygon | all angles are congruent |
| regualr polygon | equilaterel and equiangular |
| parallelogram | quadrilertal with both pairs of opposite sides parallel |
| rhombus | parallelogram with four congruent sides |
| rectangle | parallelogram with four right angles |
| square | parallelogram with four congruent sides and four right angles |
| kite | quadrlateral with two pairs of adjacent sides congruent and no opposite sides congruent |
| trapeziod | quadrilateral with exactly one pair of parallel sides |
| isosceles trapeziod | trapeziod whose nonparallel sides are congruent |
| radius | segment that has one endpoint at the center and the other endpoint on the circle |
| diameter | segment that contains the center of the circle and has both endpoionts on the circle |
