| A | B |
|---|
| acute | angle with a measure < 90 degrees |
| right | angle with a measure = 90 degrees |
| obtuse | angle with a measure >90 degrees but <180 degrees |
| straight | angle with a measure = 180 degrees |
| congruent | angles that have the same measure |
| complementary | two angles whose measures have a sum of 90 degrees |
| supplementary | two angles whose measures have a sum of 180 degrees |
| adjacent | angles that share a common side |
| vertical | nonadjacent angles formed by intersecting lines |
| transversal | a line that intersects two or more other lines |
| corresponding | angles that are in the same position along the transversal |
| interior | angles that are formed between parallel lines intersected by a transversal |
| alternate interior | nonadjacent interior angles found on opposite sides of the transversal |
| exterior | angles that are formed on the outside of parallel lines intersected by a transversal |
| alternate exterior | nonadjacent exterior angles found on opposite sides of the transversal |
