Across
- 2. A closed plane figure formed by three or more line segments
- 3. A straight line segment that passes through the center of a circle and has its endpoints on the circle
- 6. A polygon with all sides and angles equal
- 7. A triangle with two equal sides
- 10. The point where two lines intersect
Down
- 1. The longest side of a right-angled triangle
- 4. Euclid's most famous work
- 5. The result of dividing the circumference of a circle by its diameter
- 8. A straight line segment joining two points on a curve
- 9. A straight path that extends infinitely in both directions