| A | B |
|---|
| polygon | a closed figure with 3 or more sides and angles |
| regular polygon | a polygon that has ALL EQUAL sides |
| irregular | a polygon that does not have all sides equal |
| triangle | a polygon with 3 sides and 3 angles |
| acute triangle | a triangle with 3 angles that measure less than 90 |
| right triangle | a triangle with 1 angle that measures exactly 90 |
| obtuse triangle | a triangle with 1 angle that measures more than 90 |
| scalene triangle | a traingle that has NO equal sides and NO equal angles |
| isosceles triangle | a triangel that has TWO equal sides and TWO equal angles |
| equilateral triangle | a triangle that has THREE equal sides and THREE equal angles |
