Geometry Vocabulary

2. The exact middle point of a segment
6. When two lines intersect to create adjacent or vertical angles
9. An example that disputes a theory or idea
12. A line that intersects a system of lines
13. Two angles whose sum equals 90 degrees
14. The part of a line lying between two points
15. Two angles whose sum equals 180 degrees
16. A logical argument presented with factual statements in order to reach a conclusion. Statements are on one side and reasons are on the other side.
18. Point or points that are the end of a ray or segment
19. Resembling without being identical

1. On the same plane
3. Are created where a transversal crosses two lines. Each pair of these angles are outside the parallel lines and on the same side of the transversal
4. The pairs of opposite angles created by two intersecting angles
5. An if-then statement where p is the hypothesis and q is the conclusion
7. An assumption used as a basis for mathematical reasoning
8. When two lines are crossed by another line, the pairs of angles on opposite sides of the line, but inside the two lines
10. Something that cuts and angle or segment into two equal parts
11. Identical in form
12. A rule in mathematics by symbols or formulae
17. Points lying on the same line