Chapter 9

5. An angle whose measure adds up to 180 degrees
7. A function that contains a square root with the independent variable in the radicand.
10. A trigonometric function for an acute angle 0 of a right triangle.
13. A statement that can be proven
14. 2 angles that are formed by 2 lines and a transversal that are corresponding positions.
16. A set of points consisting of two different rays that have the same endpoint
17. Geometric figures that have the same shape but not necessarily the same size.
18. An angle whose measure adds up to 180 degrees
19. The side opposite of the right angle in a right triangle.

1. Two angles that share a common vertex and side, but have no common interior points.
2. 2 congruent sides of a triangle
3. An angle that has a measure greater than 90 and less than 180
4. two lines in the same plane that never intersect.
6. A line that is perpendicular to a segment at it's midpoint.
8. A trigonometric function for an acute angle 0 of a right triangle.
9. Triple A set of three positive integers A, B, and C that satisfy the equation A^2+B^2=C^2
11. An angle that has a measure greater than 0 and less than 90
12. A trigonometric function for an acute angle 0 of a right triangle.
15. An angle that has a measure of 90 degrees.
17. Consists of two endpoints and all the points between them.