| A | B |
|---|
| absolute value | distance from a point to zero |
| origin | the point 0 on a number line |
| area of a triangle | one-half base times height |
| isosceles triangle | a triangle with 2 congruent sides |
| acute angle | an angle with measure between 0 and 90 degrees |
| right angle | an angle with measure 90 degrees |
| obtuse angle | an angle with measure between 90 and 180 degrees |
| straight angle | an angle with measure 180 degrees |
