| Term | Definition |
|---|
| adjacent angles | share a side and a vertex |
| angle bisector | a ray that divides an angle into two congruent angles |
| complementary angles | Two angles whose sum is 90 degrees |
| coplanar | points that lie on the same plane |
| midpoint | The point that divides a line segment in half |
| parellel | two lines that run in the same direction, but will never meet |
| perpendicular | two lines that form a right angle |
| perpendicular bisector | a line that is perpendicular to a line at its midpoint |
| plane | an unbounded two dimentional shape |
| segment bisector | a line, ray, plane or segment that intersects a line at its midpoint |
| sides of an angle | rays that make up an angle |
| supplementary angles | two angles whose sum is 180 |
| vertex | point where lines intersect |
| vertical angles | angles formed opposite of each other when two lines meet |
Combine with other sets
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