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Types of angles
| Question | Answer |
|---|---|
| Acute angle | measures less than 90 degrees |
| Right angle | measures exactly 90 degrees |
| Obtuse angle | measures greater than 90 degrees but less than 180 degrees |
| Straight angle | measures exactly 180 degrees; straight line |
| Complementary angles | 2 angles that add to 90 degrees |
| Supplementary angles | 2 angles that add to 180 degrees |
| Parallel lines | 2 lines that will never meet; I I |
| Transversal | A diagonal line that cuts through 2 parallel lines, forming angles |
| Vertical angles | Angles across from each other |
| Corresponding angles | Angles that are in the same spot, but on a different line; on the same side |
| Alternate interior angles | Angles that are "inside" the sets of parallel lines; on opposite sides |
| Alternate exterior angles | Angles that are "outside" the sets of parallel lines; on opposite sides |