| A | B |
|---|
| angle | two rays that share an endpoint |
| vertex | shared endpoint |
| vertex | center letter of a named angle |
| straight angle | a line and equals 180 degrees |
| adjacent angles | angles that share a vertex and a side and do not overlap |
| congruent angles | angles that have the same measure |
| an arc at the vertex | shows angles are congruent |
| vertical angles | caddie corner from each other |
| vertical angles | are congruent |
| angle bisector | a ray that cuts an angle in half |
| right angle | equals 90 degrees |
| adjacent right angles create | a straight angle |
