Across
- 4. : An angle that measures exactly 90 degrees.
- 5. : A line segment with both endpoints on a circle.
- 10. : A polygon with four sides.
- 12. : The common endpoint of two rays forming an angle.
- 13. : Lines that intersect to form right angles.
- 15. : Formed by two rays with a common endpoint.
- 16. : A straight path that goes on forever in both directions.
- 17. : A part of a line with one endpoint and extends infinitely in one direction.
- 19. : A flat surface that extends infinitely in all directions.
- 20. : To divide into two equal parts.
Down
- 1. : A round shape with all points equidistant from the center.
- 2. : A three-sided polygon.
- 3. : Having the same size and shape.
- 6. : An angle less than 90 degrees.
- 7. : A chord that passes through the center of a circle.
- 8. : An angle greater than 90 degrees but less than 180 degrees.
- 9. : Lines in a plane that never intersect.
- 11. : Distance from the center of a circle to any point on it.
- 14. : A closed figure with straight sides.
- 18. : The longest side of a right triangle.