Across
- 3. A straight path extending infinitely in both directions with no endpoints.
- 4. Lines in the same plane that never intersect, no matter how far they extend.
- 6. A chord that passes through the center of a circle, twice the radius.
- 11. The longest side of a right triangle, opposite the right angle.
- 12. The point that is equidistant from all points on a circle.
- 14. A closed figure formed by a finite number of straight line segments.
- 15. The point where two or more lines, rays, or segments meet.
- 17. A polygon with three sides and three angles.
- 18. A triangle with exactly two sides of equal length.
Down
- 1. A polygon with six sides and six angles.
- 2. A triangle with all sides of different lengths.
- 4. A flat, two-dimensional surface that extends infinitely in all directions.
- 5. A line segment from the center of a circle to any point on its circumference.
- 7. The measure of the space inside a two-dimensional figure.
- 8. A part of a line with one endpoint, extending infinitely in one direction.
- 9. A line segment connecting two points on a circle.
- 10. The amount of space occupied by a three-dimensional object.
- 13. A line that touches a circle at exactly one point without crossing it.
- 16. A transformation producing a mirror image of a figure over a line.