Geometry Puzzle

2. A ray that divides an angle in to two congruent angles
6. A point that divides a segment into two congruent segments
10. A ratio of two sides of a right triangle
11. A pair of adjacent angles whose no common side are opposite rays
13. A proof in which the statement is assumed to be false and a contradiction is shown
14. A segment that is between two points and is going a certain direction
16. Abbreviation for "corresponding parts of congruent triangles are congruent"
17. A quantity that has both magnitude and direction
18. Two vectors that have the same magnitude and are goin the same direction
20. A chart that uses boxes and arrows to show the structure of the proof

1. The angle formed by a horizontal line and a line of sight to a point below
3. A repeating pattern of plane figures that completely covers a plane with no gaps or overlaps
4. A transformation that does not change the size or shape of the figure
5. Lines that are not coplanar
7. Ten- sided polygon
8. A quadrilateral with exactly two pairs of congruent consecutive sides
9. The point of concurrency of the three angle bisectors of a triangle
12. Starting point of a vector
15. A triangle with three acute angles
19. A polygon in which no diagonal contains points on the exterior of the polygon