Geometry

4. mean the positive number x such that a / x = x/ b
5. the "if" and "then" parts of a statement are switched
7. all corresponding lengths are the same
10. polygon with exactly four sides
12. angles of a polygon that share a side
13. triangle a triangle measured more than 90°
17. a quadrilateral that has two pairs of opposite sides that are parallel
19. corresponding angles are congruent; corresponding sides are proportional

1. the side opposite of the right angle in a triangle
2. a segment connecting any vertex of a triangle to the midpoint of the opposite side
3. angle an angle that measures 90°
6. triangle a triangle with three equal sides
7. distance around a circle
8. bisector Ray that cuts the angle exactly in half, making two equal angles
9. 3 or more lines meet at a single point
11. quadrilateral that has four congruent sides
14. a statement that two ratios are equal
15. point at which two line segments intersect forming an angle
16. statement - the ratio of the lengths of corresponding sides
18. a comparison of two quantities