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# McRoy's Ch. 3 Vocab

### Vocabulary from Mr. McRoy's Honors Geometry

1. Two lines that intersect to form four right angles. Perpendicular
2. Two lines that do not intersect and are not coplanar. Skew
3. Two lines that do not intersect and are coplanar. Parallel
4. Two angles that share a vertex and whose sides form two pairs of opposite rays. Vertical angles
5. Two angles that are formed by two lines and a transversal and that lie between the two lines on the same side of the transversal. Consecutive interior
6. Two angles that are formed by two lines and a transversal and that lie outside the two lines on opposite sides of the transversal. Alternate exterior
7. Two angles that are formed by two lines and a transversal and occupy the same relative positions. Corresponding
8. Two angles that are formed by two lines and a transversal and that lie between the two lines on opposite sides of the transversal. Alternate interior
9. Two adjacent angles whose noncommon sides are opposite rays. Linear pair
10. To have the same measure. Congruent
11. To have one or more points in common. Intersect
12. The statement formed when one negates the hypothesis and conclusion of a conditional statement. Inverse
13. The statement formed by switching the hypothesis and conclusion of a conditional statement. Converse
14. Rules that are accepted without proof. Postulates
15. Points that lie on the same plane. Coplanar
16. An unproven statement that is based on observations. Conjecture
17. An angle that combines with a given angle to total 90o. Complement
18. An angle that combines with a given angle to total 180o. Supplement
19. A true statement that follows as a result of other true statements. Theorem
20. A line that intersects two or more lines at different points. Transversal
21. An angle that measures exactly 90o. Right angle
22. The statement formed when one negates the hypothesis and conclusion of the converse of a conditional statement. Contrapositive
23. Two angles with a common side and vertex, but no common interior points. Adjacent angles
24. A type of logical statement that has a hypothesis and conclusion. Conditional
25. Two rays that intersect to form a line. Opposite rays
Created by: dmcroy1