2.5 Identifying angles (review) and their properties Flashcards
acute angle An angle that measures less than 90 degrees.
right angle An angle that measures exactly 90 degrees.
obtuse angle An angle that measures betwwen 90 and 180 degrees.
straight angle An angle that measures exactly 180 degrees.
An angle that measures exactly 180 degrees.
Angles whose measure adds up to 90 degrees.
supplementary angles Angles whose measure adds up to 180 degrees.
vertical angles Angles opposite one another at the intersection of two lines.
adjacent angles Angles that have a common side and a common vertex (corner point).
congruent angles Angles that have the same measure
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| 1114862932 | right angle | angle that measures exactly 90 degrees. |  | 0 |
| 1114862933 | obtuse angle | angle that is >90 degrees and <180 degrees. |  | 1 |
| 1114862934 | complementary angles | Angles whose measure adds up to 90 degrees. |  | 2 |
| 1114862935 | supplementary angles | Angles whose measure adds up to 180 degrees. |  | 3 |
| 1114862936 | vertical angles | Angles opposite one another at the intersection of two lines. |  | 4 |
| 1114862937 | adjacent angles | Angles that have a common side and a common vertex (corner point). |  | 5 |
| 1114862938 | congruent angles | Angles that have the same measure |  | 6 |
| 1114862939 | acute angle | angles whose measure is >0 degrees and <90 degrees |  | 7 |
| 1114862940 | Perpendicular lines | 2 lines that intersect to form 90 degree angles Note: LINES are perpendicular, not angles. |  | 8 |
| 1114862941 | Parallel lines | Two or more coplanar lines that do not intersect. Two parallel lines are everywhere equidistant. |  | 9 |