Across
- 4. An angle with measure between 0 and 90
- 7. Two lines that intersect to form right angles
- 11. A chord that contains the center of a circle
- 15. Circles that lie in the same plane and have the same center
- 17. An 8-sided polygon
- 18. Lines that are not coplanar
- 19. A segment from a vertex to the midpoint to the opposite side
Down
- 1. An angle with measure between 90 and 180
- 2. A statement that can be proved
- 3. A polygon that is both equiangular and eguilateral
- 4. A figure formed by two rays that have the same endpoint. The two rays are called the sides of the angle. Their common endpoint is the vertex.
- 5. A 10-sided polygon
- 6. A quadrilateral with four right angles and four congruent sides
- 8. A segment whose endpoints lie on a circle
- 9. The set of points in a plane that are a given distance from a given point in the plane. The given point is the center, and the given distance is the radius.
- 10. A 5-sided polygon
- 12. The figure formed by three segments joining three noncollinear points. Each of the three points is a vertex of the triangle and the segments are the sides.
- 13. A line that intersects two or more coplanar lines in different points
- 14. An angle with measure 90
- 16. The set of all points