| A | B |
|---|
| right | an angle equal to 90 degrees |
| an angle greater than 90 degrees | obtuse |
| acute | an angle smaller than 90 degrees |
| straight angle | angle is equal to 180o |
| supplementary | 2 angles are __________ if the sum of their measures equals 180°. |
| complementary | Two angles are _________ if the sum of their measures equals 90° |
| vertical angles | share the same vertex, and same 2 lines, and same measurement in degrees |
| adjacent | two angles are __________ if they share the same vertex and one line/ray, they are next to eachother (they do not necessarily share the same measurement) |
