Across
- 3. distance between points x and y
- 7. perpendicular lines (90° angle)
- 9. line that start from point A
- 11. = 90°
- 14. an angle formed by the intersection of two great circles of a sphere.
- 15. line from point A to point B
Down
- 1. triangle shape
- 2. same shapes,not same size
- 4. arcsecond, 1′=60″
- 5. the measure of the angle formed by the two rays or arms at a common vertex.
- 6. arc from point A to point B
- 8. equivalence of geometric shapes and size
- 10. 1 turn = 360°
- 12. formed by two rays
- 13. arcminute, 1° = 60′