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Geometry Honors
Geometry Honors Module 4 Vocab
Term | Definition |
---|---|
Vertical angles | The opposite angles when two lines intersect. |
The Vertical Angles Theorem | If two angles are vertical angles, then the angles are congruent. |
Supplementary angles | Two angles whose measures have a sum of 180 degrees. |
Complementary angles | Two angles whose measures have a sum of 90 degrees. |
Supplement | The number that is missing from 180 degrees. (180 - x = s) |
Complement | The number that is missing from 90 degrees. (90 - x = c) |
Parallel lines | Coplanar lines that do not intersect. |
Transversal | A line that intersects two coplanar lines at two different points. |
Corresponding angles | Angles that lie on the same side of a transversal and on the same sides of the intersected lines. |
Same-side interior angles | Angles that lie on the same side of a transversal and between the intersected lines. |
Alternate interior angles | Nonadjacent angles that lie on opposite sides of a transversal between the intersected lines. |
Alternate exterior angles | Angles that lie on opposite sides of a transversal and outside the intersected lines. |
Same-Side Interior/Exterior Angles Postulate | If two parallel lines are cut by a transversal, then the pairs of same -side interior/exterior angles are supplementary. |
Alternate Interior/Exterior Angles Theorem | If two parallel lines are cut by a transversal, then the pairs of alternate interior/exterior angles have the same measure. |
Corresponding Angles Theorem | If two parallel lines are cut by a transversal, then the pairs of corresponding angles have the same measure. |