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).
vertex A point where two or more straight lines meet.
congruent angles Angles that have the same measure
Terms : Hide Images
| 1832708058 | right angle | angle that measures exactly 90 degrees. |  | 0 |
| 1832708059 | obtuse angle | angle that is >90 degrees and <180 degrees. |  | 1 |
| 1832708060 | straight angle | angle that measures exactly 180 degrees. |  | 2 |
| 1832708061 | complementary angles | Two angles whose sum is 90 degrees |  | 3 |
| 1832708062 | supplementary angles | Angles whose measure adds up to 180 degrees. |  | 4 |
| 1832708063 | vertical angles | Angles opposite one another at the intersection of two lines. They are congruent ( the same size). |  | 5 |
| 1832708064 | adjacent angles | Angles that have a common side and a common vertex (corner point). |  | 6 |
| 1832708065 | vertex | A point where two or more straight lines meet. |  | 7 |
| 1832708066 | congruent angles | Angles that have the same measure |  | 8 |
| 1832708067 | acute angle | angles whose measure is >0 degrees and <90 degrees |  | 9 |
| 1832708068 | degrees | a unit for measuring angles |  | 10 |
| 1832708069 | parallel lines | Lines (in the same plane) that never intersect. you can prove they are parallel if they have congruent (the same size) corresponding, or alternative angles, or if co-interior angles are supplementary) |  | 11 |
| 1832708070 | Perpendicular Lines | Lines that intersect to form right angles. |  | 12 |
| 1832708071 | Transversal | A line that intersects 2 or more lines |  | 13 |
| 1832708072 | Corresponding Angles | Angles in the same place on different lines they are equal in size. |  | 14 |
| 1832708073 | Alternative Interior Angles | Interior angles on the alternate sides of the transversal they are both equal in size. |  | 15 |
| 1832714014 | alternate exterior angles | Angles that lay outside the parallel lines and are on opposite sides of the transversal; They are congruent. |  | 16 |
