Maths Crosswords

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Across
  1. 3. A sign used in subtraction
  2. 4. Longer dimension of a rectangle
  3. 5. Approximately equal to 3.14
  4. 8. Take away
  5. 10. Three sided shape
  6. 11. Amount of space taken by 3D shapes
  7. 12. angle greater than 90 degrees but less than 180
Down
  1. 1. Sign used in addition
  2. 2. Positive or negative whole number
  3. 6. A three sided shape having two equal sides
  4. 7. An angle measuring less than 90 degrees
  5. 9. It means multiply