Geometry

3. a closed four sided shape
4. a line that passes through two parallel lines
5. angles angles that are across for each other and are equal
6. bisects the angle
9. the point at which the three medians intersect
10. the intersection of two orays at an endpoint
12. a triangle
13. equals 180 degrees
14. two angles that are next to each other and share a common side
15. a segment that connects a vertex of a triangle to the midpoint of the opposite side
17. a segment joining a vertex to the opposite side so that it is perpendicular to that side
18. equals 90 degrees
19. a location with no shape or size

1. lines that never touch
2. A segment that joins the midpoint of two sides of a triangle
7. the outside of a angle
8. an angle in the inside of a shape
11. a measurable part of a line consisting of two end point
16. a closed figure formed by three or more line segments called sides
19. a flat surface made up of points and extends infinitely in all directions