Across
- 1. lines that never intersect.
- 4. line that start from point A.
- 5. arcminute, 1° = 60′.
- 6. same shapes, not same size.
- 7. between points x and y |x-y | = 5.
- 9. π = 3.141592654...
- 13. 1 turn = 360°
- 14. equivalence of geometric shapes and size.
Down
- 2. 360° = 2π rad.
- 3. 360° = 400 grad.
- 5. lines that intersect at a right(90 degrees) angle.
- 8. formed by two rays
- 10. ΔABC ≅ ΔBCD.
- 11. infinite line
- 12. from point A to point B