| A | B |
|---|
| A(n) _____ is the part of a line between two points. | segment |
| The ______ is the corner of an angle. It is the common endpoint shared by the rays or line segments. | vertex |
| A _____ measures 90 degrees. | right angle |
| A(n) _____ is a part of a line starting at a particular endpoint and extending forever in one direction. | ray |
| A _____ measures exactly 180 degrees. | straight angle |
| A(n) _____ is the straight path connecting two points and extending beyond the points in both directions. | line |
| The _____ is halfway between two given points. | midpoint |
| A(n) _____ is the figure made by two rays or line segments sharing a common endpoint. | angle |
| A(n) _____ measures less than 90 degrees. | acute |
| _____ meet at a right angle. | perpendicular lines |
| Points that are on the same line are _____. | collinear |
| _____ are angles opposite one another at the intersection of two lines. | vertical angles |
| A(n) _____ measures greater than 90 degrees and less than 180 degrees. | obtuse |
| A(n) _____ is a single location in space. | point |
| A(n) _____ cuts an angle exactly in half. | angle bisector |
| A(n) _____ is a flat surface the extends forever in all directions. | plane |
| ________ are points that lie in the same plane. | coplanar |
