The Language of Geometry

1. The middle point of a line segment.
3. The meeting of two lines that form an angle.
4. A combination of two rays (half-lines) with a common endpoint.
5. A measurement of a plane angle in which one full rotation is 360 degrees.
7. In Geometry, a _______ is often used to draw straight lines.
8. A tool used to measure angles in Geometry.
10. When two or more lines meet or cross each other in a plane, they are often called ________ _____.
12. A _____ can be named by 3 points that lie on the _____.
14. A portion of a line from one point to another which can be named by using endpoints.
15. Is exactly half of a revolution & is also known as "flat angle".

2. Coplanar lines that do not intersect ex.)l || m
6. Coplanar lines which intersect at a right angle.
9. An angle that equals 90° & can be often found at the intersection of two perpendicular lines.
11. A "half-line" which is named by using an endpoint and another point.
12. Often represented as dots & has no actual size.
13. Has no thickness & goes on forever.