Geometry

1. two lines in the same plane that are at equal distance from each other and never meet
8. angles which are formed at corresponding corners when two parallel lines are intersected by a transversal
9. The converse of a conditional statement is created when the hypothesis and conclusion are reversed
12. the angles that lie opposite to each other when two lines intersect
14. Terms that are not defined
15. a line, ray, or line segment that intersects other lines, rays, or line segments on a plane at different intersecting points

2. a pair of adjacent angles formed when two lines intersect
3. a proposition that is consistent with known data, but has been neither verified nor shown to be false
4. the angles formed when a transversal intersects two coplanar lines
5. The process of finding the opposite of the given statement
6. when both the hypothesis and conclusion are negated
7. an angle that is exactly equal to 90 degrees (or π/2) in measure
10. a flat surface or area that extends infinitely in two dimensions and has no thickness
11. a logical argument that will explain why a statement is true
13. A long narrow mark