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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 |