MATHEMATICAL PUZZLE

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Across
  1. 2. Division
  2. 4. LXXX
  3. 6. 1 turn = 360°
  4. 7. Set of all possible values
  5. 10. ω letter
  6. 12. ~ symbol
  7. 13. Form by two rays
  8. 14. Infinite line
  9. 15. XVII
  10. 16. ^ symbol
Down
  1. 1. Decimal separator
  2. 3. A collection of elements
  3. 5. ζ letter
  4. 8. λ letter
  5. 9. Multiplication
  6. 11. Rank of matrix A