Across
- 6. Amount of space inside a shape
- 8. Lines that intersect at a 90-degree angle
- 10. Four-sided polygon with opposite sides equal
- 12. Point where two or more lines meet
- 14. Triangle with all three sides equal
- 15. Longest side of a right-angled triangle
- 16. Round shape with all points equidistant from the center
- 17. Angle more than 90 degrees but less than 180 degrees
- 18. Angle less than 90 degrees
Down
- 1. Line segment that passes through the center of a circle and has its endpoints on the circle
- 2. Three-sided polygon
- 3. Four-sided polygon with all sides equal and all angles 90 degrees
- 4. Lines that are always the same distance apart and never meet
- 5. Closed figure with many sides
- 7. Triangle with all sides of different lengths
- 9. Line segment from the center of a circle to any point on the circle
- 11. Total distance around a shape
- 13. Triangle with at least two sides equal
- 16. Line segment with both endpoints on a circle but not passing through the center