gk

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Across
  1. 2. Closed geometric shape
  2. 3. Sum of all sides
  3. 5. Exponent in a given base
  4. 7. Divisor of a number
  5. 9. Sum of a sequence
  6. 12. Rectangular array of numbers
  7. 13. Symbol representing an unknown
  8. 14. Balanced arrangement
  9. 15. Trigonometric function
  10. 17. Proven mathematical statement
  11. 18. Solution to an equation
  12. 19. Oval-shaped curve
  13. 20. Measure of rotation
Down
  1. 1. Result of multiplication
  2. 4. Power to which a number is raised
  3. 6. Degree-two polynomial
  4. 8. Transformation preserving distance
  5. 10. Set contained within another
  6. 11. Number to be divided
  7. 16. Whole number