Maths

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Across
  1. 2. the middle of a circle
  2. 3. it is exactly the same each side of the line of ....
  3. 5. backwards to squared
  4. 8. 2 lines exactly the same
  5. 9. 3 sided shape with 3 angles that add up to 180 degrees
  6. 11. a number timesed by the same number
Down
  1. 1. all the way round a circle
  2. 4. has 4 side the same length all angles are 90 degrees
  3. 6. 1 set of parallel lines you can do it in the circus
  4. 7. an angle that is over 180 degrees
  5. 10. a type of angle that is under 90 degrees