Geometry

2. angle whose measure is 90 degrees.
4. angle whose measure is greater than 90 degrees but less than 180 degrees
6. the statement formed by exchanging the hypothesis and the conclusion of a conditional statement
7. in a conditional statement the statement that immediately follows the word if
9. of any surface is the number of square units required to cover the surface
11. the conjunction of a conditional statement and its converse
15. lines that never cross
16. reasoning reasoning that uses a number of specific examples to arrive at a plausible prediction
17. Point at which two line segments intersect
18. a statement or conjecture that can be proven true by given, definitions, postulates, or already proven theorems
20. the statement formed by negating both the hypothesis and the conclusion of a conditional statement

1. a logical argument in which each statement you make is supported by a statement that is accepted as true
3. of a polygon is the distance around the polygon
5. reasoning a system of reasoning that uses facts, rules,definitions, or properties to reach logical conclusions
8. quadrilateral with both pairs of opposite sides parallel
10. the statement formed by negating both the hypothesis and conclusion of the converse of a conditional statement
12. in a conditional statement the statement that immediately follows the word then
13. chord that passes through the center of the circle
14. a statement that describes a fundamental relationship between basic terms of geometry
19. chord that passes through half a circle