Geometry Vocabulary

9. A _____ is a basic principle that is assumed to be true.
10. _____ lines intersect at a 90 degree angle.
12. Meaning to have the same measure
13. Alternate _____ angles are out side the parallel lines and on either side of the transversal.
14. _____ angles that are in the same position on 2 parallel lines in relation to the transversal.
16. _____ angles add up to 180 degrees.
17. An _____ angle is less than 90 degrees.
19. A line that has two end points is called a _____.
20. _____ lines never touch.

1. A _____ triangle has all 3 sides congruent.
2. The point in the middle of a line segment that is equidistant from each end point is called the _____.
3. A _____ triangle has 3 different side lengths.
4. Same Side _____ angles are in between the parallel lines and are on the same side of the transversal.
5. _____ interior angles are inside the parallel lines and on either side of the transversal.
6. To cut an angle or segment in half
7. An _____ triangle has 2 sides that are the same and 1 different.
8. A _____ angle is exactly 90 degrees.
9. A _____ is a tool that allows you to measure an angle.
11. _____ is the side across from the right angle.
15. _____ angles are opposite each other and created by two intersecting lines.
18. An _____ angle is more than 90 degrees.