Crossword maze

4. a rigid transformation that involves flipping a figure over the line
6. the sum of the three angles in any triangle is 180
10. A rigid transformation that involves turning an entire figure about a fixed point
13. a trapizoid with congruent base angles
14. two pairs of adjacent congruent sides
16. a segment that connects the midpoints of any two sides of a triangle
19. the measure of any side or angle is equal to itself
21. a line segment that goes from one coner to another, but is not an edge

1. one pair of parallel sides
2. used when trying to find a side of a right triangle
3. a diagram with fact bubbles and a conclusion bubble with justifacations to prove some facts such as similar triangles
5. a rigid transformation that involved sliding figure to a new location
7. all four sides are congruent
8. to divide into two equal parts.
9. a point on a line segment that divides it into two equal parts.The halfway point of a line segment
11. opposite sides are parallel
12. lie in the same plane and never intersect and have the same slope
15. has four right angles
17. the distance around a 2-dimensional object's exterior
18. the number of square units needed to fill up a region on a flat surface
20. lines that intersect at a right angle opposite reciprocal slopes