Geometry

2. the intersection of two orays at an endpoint
4. a segment joining a vertex to the opposite side so that it is perpendicular to that side
5. two angles that are next to each other and share a common side
6. the point at which the three medians intersect in a triangle
11. a closed figure formed by three or more line segments called sides
13. an angle in the inside of a shape
15. bisects the angle
16. a segment that connects a vertex of a triangle to the midpoint of the opposite side
17. a shape with four congruent sides and 90 degree angles
19. A segment that joins the midpoint of two sides of a triangle
20. a location with no shape or size

1. a closed four sided shape
3. a measurable part of a line consisting of two end point
7. the outside of a angle
8. equals 180 degrees
9. lines that never touch
10. a line that passes through two parallel lines
12. angles angles that are across for each other and are equal
14. a flat surface made up of points and extends infinitely in all directions
18. equals 90 degrees