Geometry

2. a proof that lists statements and reasons in a linear order, first to last, in columns
5. A quadrilateral with four right angles
6. add to 90
8. A triangle with all sides of equal length
10. If x=y then y can be substituted in for x in any expression
13. opposite over adjacent
14. adjacent over hypotenuse
16. Events that can never happen at the same time
17. If x=y and y=z, then x=z
19. If 2 sides are equal and angle between sides are equal, then the two triangles are congruent
20. if two hypotenuses and two legs are congruent, then the right triangles are congruent
21. a line segment that has both endpoints on a circle

1. A quadrilateral with two pairs of parallel sides
3. The set of points equidistant from a central point
4. add to 180
7. if three sides are congruent, the triangles are congruent
9. A rectangle format that organizes data to examine the relationship between two categorical variables
11. opposite over hypotenuse
12. An angle in a circle with its vertex on the circle
15. a point that divides a line segment into two parts of equal length
18. The measure of any side or angle is equal to itself