Across
- 3. An arc whose central angle is a right angle.
- 5. The longest chord of a circle that contains the center of the circle as its midpoint.
- 8. In the same line.
- 10. The set that satisfies a given condition.
- 11. A seven-sided polygon.
- 13. A two-dimensional group of points that goes on infinitely in all directions, made up of infinite lines.
Down
- 1. Angles that have a common side in the interior of the angle, formed by the uncommon sides.
- 2. Another word for perpendicular.
- 4. The set of points on a plane equidistant from a central point.
- 6. A part of a line that begins at the endpoint and extends endlessly in one direction.
- 7. Part of a circle containing its center and an arc.
- 9. A parallelogram with four equilateral sides.
- 11. The measurement of the steepness and direction of a nonvertical line.
- 12. A straight line or plane that touches a curve or curved surface at a point.