Geometry Puzzle

2. A quantity that has both magnitude and direction
5. A triangle with three acute angles
6. A chart that uses boxes and arrows to show the structure of the proof
9. A ratio of two sides of a right triangle
11. Starting point of a vector
13. A pair of adjacent angles whose no common side are opposite rays
15. A ray that divides an angle in to two congruent angles
17. Two vectors that have the same magnitude and are goin the same direction
18. A proof in which the statement is assumed to be false and a contradiction is shown
19. Ten- sided polygon
20. A point that divides a segment into two congruent segments

1. A polygon in which no diagonal contains points on the exterior of the polygon
3. A transformation that does not change the size or shape of the figure
4. The point of concurrency of the three angle bisectors of a triangle
7. The angle formed by a horizontal line and a line of sight to a point below
8. A segment that is between two points and is going a certain direction
10. A quadrilateral with exactly two pairs of congruent consecutive sides
12. Abbreviation for "corresponding parts of congruent triangles are congruent"
14. Lines that are not coplanar
16. A repeating pattern of plane figures that completely covers a plane with no gaps or overlaps