Across
- 4. "⊥ "
- 5. " |x-y| "
- 7. "rad"
- 10. formed by two rays
- 13. = 90°
- 14. "∆"
- 15. " ⌢ "
Down
- 1. "π"
- 2. It is usually represented by the bar symbol "—"on top of the endpoints
- 3. equivalence of geometric shapes and size
- 6. " ∢"
- 8. " ° "
- 9. same shapes, not same size
- 11. " ∥ "
- 12. "∡"