Across
- 1. ′
- 4. ∠
- 6. a smooth curve joining two endpoints
- 9. π
- 10. grad g
- 12. ∟
- 13. ° deg
- 15. ⊥
Down
- 2. rad c
- 3. Δ
- 5. a one-dimensional figure, which has length but no width
- 7. |x-y|
- 8. ∥
- 11. ~
- 14. a line with a single endpoint (or point of origin) that extends infinitely in one direction