Math Vocab

3. the amount of space inside a two-dimensional shape or surface
4. two angles who's measures have a sum of 180 degrees
6. the distance around a circle
8. one-half of a circle
9. the point inside a circle that is the same distance from all point on the circle
10. the set of all points in a plane that are the same distance from the center
11. the distance from the center of a circle to any point on the circle
12. two angles that share a common side

1. a figure made up of triangles, squares, rectangles, and other two dimensional figures
2. total length around the outside of a shape
5. opposite angles formed by the intersection of two lines
6. two angles who's measures have a sum of 90 degrees
7. the distance across a circle through the center