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Angle Vocabulary
| Term | Definition |
|---|---|
| Angle | A figure formed by two rays that have the same endpoint |
| Vertex | a meeting point of two rays that form an angle |
| Acute angle | an angle whose measure is greater than 0 degrees but less than 90 degrees |
| Obtuse angle | an angle whose measure is greater than 90 degrees but less than 180 degrees |
| Right angle | an angle whose measure is equal to 90 degrees |
| Straight angle | an angle that has a measure of 180 degrees |
| Adjacent angle | two angles in a plane that share a common vertex and a common side, but that no common interior points |
| Congruent angles | angles that have the same measure |
| Angle bisector | divides an angle into two congruent angles |
| Vertical angles | the opposite angles formed when two lines intersect; congruent |
| Complementary angles | two angles whose measures have the sum of 90 degrees |
| Supplementary Angles | two angles whose measures have the sum of 180 degrees |
| Linear pair | two adjacent angles whose non-common sides are opposite rays; form a straight line |