Geometry Chapter One Vocabulary

4. two angles whose measures have a sum of 90 degrees
6. a flat surface made up of points that has two dimensions and extends without end
7. two adjacent angles whose noncommon sides are opposite rays
9. a rule that is accepted without proof
13. a ray that divides an angle into two angles that are congruent
15. the set of points two or more geometric figures have in common
18. the point that divides the segments into two congruent segments
19. two angles whose measures have a sum of 180 degrees
22. two angles whose sides form two pairs of opposite rays
23. contains all of the points inside of an angle

1. a set of points consisting of two different rays that have the same endpoint
2. line segments or angles that have the same length or measure
3. a real number that corresponds to a point on a line
5. points that lie on the same plane
8. two angles that share a common vertex/side
10. terms that can be described using known words, such as point or line
11. an angles that has a measure greater than 90 degrees
12. it is represented by a line with two arrowheads and extends without end
14. an angle that has a measure of 90 degrees
16. Points that lie on the same line
17. an angle that measures less than 90 degrees
20. part of a line that consists of two endpoints
21. contains all of the points outside of an angle
24. a part of a line that consists of one endpoint and all of the points on the line on one side of the endpoint