Mathematics X English

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Across
  1. 2. A box-shaped solid object that has six identical square faces
  2. 4. In square it is "a x square root of two"
  3. 8. Shows that there is no amount
  4. 9. To calculate approximately
  5. 11. The distance from the center to the edge of a circle
  6. 12. You use it to calculate for example area of triangle
  7. 13. Facilitates calculating
  8. 16. Part of the whole
  9. 18. 1/100
  10. 19. From 0 to 9
Down
  1. 1. The middle number (in a sorted list of numbers)
  2. 3. The result or 'output' of a calculation
  3. 4. 2Radius
  4. 5. Sentence in logic
  5. 6. Side in right triangle opposite to right angle
  6. 7. The line that divides something into two equal parts
  7. 10. It is often written as "f(x)" where x is the value you give it
  8. 14. Has 3 sides and 3 angles
  9. 15. When angle is less than 90 degrees
  10. 17. Part of the proof you have to prove