Across
- 3. — the distance around a circle
- 5. — a triangle with two equal sides
- 6. — shapes that are identical in size and form
- 8. — when one half mirrors the other
- 11. — a polygon with four sides
- 12. — the longest side of a right triangle
- 14. — the point where two lines or edges meet
- 15. plane — a grid defined by an x‑axis and y‑axis
Down
- 1. — lines that meet at a right angle
- 2. angle — an angle measuring less than 90 degrees
- 4. — a line passing through the center of a circle, touching both sides
- 7. — distance from the center of a circle to any point on it
- 9. angle — an angle greater than 90 degrees but less than 180
- 10. lines — lines that never intersect
- 13. — a closed shape with straight sides