| A | B |
|---|
| triangle | a three sided polygon |
| 180 degrees | the sum of the measures of the angles of a triangle |
| acute triangle | a triangle with 3 acute angles |
| right triangle | a triangle with one right angle |
| obtuse triangle | a triangle wiht one abtuse angle |
| equilateral triangle | a trianglw with 3 congruent sides |
| isosceles triangle | a triangle with at least two congruent sides |
| scalene triangle | a triangle with no congruent sides |
| congruent figures | shapes that have the same size and shape |
| corresponding parts | the parts of congruent figures that "match" |
| similar figures | figures that have the same shape, but not necessarily the same size |
