Geometry Vocab

1. a pair of sides or angles that have the same relative position in two congruent figures
4. a point is the same distance from two figures
6. segment from a vertex of a triangle to the midpoint of the opposite side
8. a segment that connects the midpoints of two sides of a triangle
10. rate of change between any two points on a line
12. point of concurrency of the three medians of a triangle
13. figures that have the same shape but not necessarily the same size
16. segment from a vertex of a triangle to the opposite side
18. point of concurrency of the three perpendicular bisectors of a triangle
19. coplanar lines that do not intersect
20. three or more lines, rays, or segments that intersect in the same point

2. point of concurrency of the lines containing the altitudes of a triangle
3. two lines that intersect to form a right angle
5. lines that do not intersect and are not coplanar
7. a proof in which you temporarily assume that the desired conclusion is false
9. the name for a polygon where all sides are congruent
11. a segment that joins two non-consecutive vertices
14. the name for a polygon where all angles are congruent
15. the point of concurrency of the angle bisectors of a triangle
17. the ratio of the lengths of corresponding sides of the image and preimage of a dilation