Maths Crossword

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Across
  1. 3. Straight line across a circle
  2. 4. Greek mathematician who discovered a famous triangle theorem
  3. 7. Mathematical rule using letters and symbols
  4. 9. What you find when you reverse squaring
  5. 11. Opposite divided by hypotenuse
  6. 15. Measured in degrees
  7. 17. Distance across a circle through the centre
  8. 18. Letter that represents an unknown number
  9. 19. Opposite divided by adjacent
  10. 21. Slice of a circle like a pizza piece
  11. 22. The side across from the angle in a triangle
  12. 23. Curved part of a circle's edge
  13. 24. Multiplied by itself
Down
  1. 1. A mathematical rule that has been proved
  2. 2. The space inside a 2D shape
  3. 5. Adjacent divided by hypotenuse
  4. 6. The side next to the angle in a triangle
  5. 8. Find the value of the unknown
  6. 10. A polygon with three sides
  7. 12. Multiply out brackets
  8. 13. Distance from centre to edge of a circle
  9. 14. Two expressions that are equal
  10. 16. Maths using letters to represent numbers
  11. 17. Unit for measuring angles
  12. 20. The space inside a 3D shape