Across
- 8. The distance around a circle
- 9. two angles that share a vertex and a side
- 10. opposite angles formed by two intersecting lines
- 11. 2 angles whose measures have a sum of 90 degrees
- 12. a figure made up of triangles, squares, rectangles, semicircles, and other two-dimensional figures.
Down
- 1. 2 angles whose measures have a sum of 180 degrees
- 2. two or more angles of equal measure
- 3. the distance across the circle through the center.
- 4. point in the center of a circle
- 5. the set of all points in a plane that are the same distance from the center.
- 6. the distance from the center to any point on the circle.
- 7. one-half of a circle.