Geometry Puzzle

2. A transformation that does not change the size or shape of the figure
5. Ten- sided polygon
7. A proof in which the statement is assumed to be false and a contradiction is shown
10. A point that divides a segment into two congruent segments
11. A quantity that has both magnitude and direction
12. A ray that divides an angle in to two congruent angles
15. A segment that is between two points and is going a certain direction
16. A chart that uses boxes and arrows to show the structure of the proof
17. A triangle with three acute angles
19. Two vectors that have the same magnitude and are goin the same direction
20. A quadrilateral with exactly two pairs of congruent consecutive sides

1. A pair of adjacent angles whose no common side are opposite rays
3. A ratio of two sides of a right triangle
4. Starting point of a vector
6. A polygon in which no diagonal contains points on the exterior of the polygon
8. Lines that are not coplanar
9. Abbreviation for "corresponding parts of congruent triangles are congruent"
13. The point of concurrency of the three angle bisectors of a triangle
14. The angle formed by a horizontal line and a line of sight to a point below
18. A repeating pattern of plane figures that completely covers a plane with no gaps or overlaps