Unit 1: Geometry Basics

2. Two angles directly across from each other on intersecting lines
4. Points that lie on the same line
6. An angle with a degree measure less than 90 degrees
7. Adjacent angles that are supplementary (combined they form a straight line)
8. Two angles with measures that sum to 90 degrees (They do not have to be adjacent angles)
12. Made up of points with no thickness or width
15. Two angles that share a common side and a Vertex (next to each other)
22. A line segment or ray Perpendicular to a segment at its midpoint
23. Two angles that have the same measure are congruent
24. A location with no size or shape
25. An angle with a measure of 90 degrees
26. A line Segment with an associated direction
27. A line that extends indefinitely in one direction
29. Points that lie on the same plane
30. The common endpoint of an angle (Where the two rays or sides intercect)
31. The formula used to find the point halfway between two endpoints
32. The formula used to find the distance between two points on a coordinate plane

1. If A,B,and C are collinear points and B is between A and C, then AB+BC=AC
3. A line or ray that divides an angle into two equal parts
5. If <ABD and <DBC are adjacent, then <ABD +<DBC=<ABC
9. Two angles with measures that sum to 180 degrees (They do not have to be adjacent)
10. The intersection of two rays at an endpoint
11. Points that don't lie on the same plane
12. A measurable part of a line consisting of two endpoints
13. If two segments have the same length then they are congruent
14. An angle with a degree measure of 180 degrees
16. Points that don't lie on the same line
17. A flat surface made up of points and extends indefinitely in all directions
18. Two lines that intersect at a 90 degree angle (right angle)
19. A segment, line, or plane that intersects a segment at its midpoint
20. The "run" of a directed line segment
21. The "rise" of a directed line segment
28. Two lines that never intersect