Geometry Vocabulary

3. bisector any segment, line, line or plane that intersects a segment at its midpoint
4. of concurrency the point of intersection of concurrent lines
6. equation stating that two ratios are equal
7. common endpoint of an angle
8. polygons that are the same shape but different in size
11. lines three or more lines intersecting at a common point
12. segment whose endpoints are a vertex of a triangle and the midpoint of the side opposite the vertex
14. point of concurrency of the perpendicular bisectors of a triangle
16. the point of concurrency for the medians of a triangle
17. segments from a vertex to the line containing the opposite side and perpendicular to the line containing that side
18. the point halfway between the endpoints of the segment
19. comparison of two quantities

1. bisector a line, segment, or ray passing through the midpoint of a side and is perpendicular to that side
2. angle 90°
5. intersection point of the altitudes of a triangle
9. factor ratio comparing the lengths of corresponding sides of similar figures
10. formed by to non-collinear rays that have a common point
13. segment piece of a line
14. when segments have the same measure
15. segment whose endpoints are the midpoints of two sides of a triangle