G.0 Geometry Vocabulary

2. two angles with measures that sum to 90 degrees *Do not have to be adjacent*
4. points that lie on the same line
6. two angles directly across from each other on intersecting lines *always congruent*
8. an angle with a degree measure less than 90 degrees
9. any flat surface made up points and extends indefinitely in all directions
12. an angle with a degree measure of 180 degrees
14. an angle with a degree measure greater than 90 degrees
15. a specific location in space with no size or shape
16. a segment, line, or plane that intersects at its midpoint
18. measurable part of a line consisting of two endpoints
19. two lines that intersect at a 90 degree angle (right angle)
20. formula used to find the length of segment
21. an angle with a degree measure of 90 degrees
24. two angles that share a common side and vertex "next to" each other
26. two segments with the same length, they are congruent
28. two angles with measures that sum to 180 degrees *Do not have to be adjacent*
29. a line, segment, or ray perpendicular to a segment at its midpoint.

1. two angles that have the same measure
3. points or lines that lie of the same plane
5. If <ABD and <DBC are adjacent, then <ABD + <DBC = <ABC
7. a line or ray that divides an angle into two equal parts
10. formula used to find the midpoint of a segment
11. the common endpoint of an angle
13. If A, B, and C are colliner points and B is between A and C, then AB + BC = AC
17. adjacent angles that are supplementary. Combined, they form a straight line.
22. the shortest distance between two points with no thickness or width
23. the intersection of two rays at an endpoint
25. two lines that never intersect
27. a line that extends indefinitely in one direction