Summer's Maths Crossword

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Across
  1. 2. use me to find the angle
  2. 7. use me to draw a line
  3. 8. I am an angle less than a right angle
  4. 9. I am a machine for adding up
  5. 10. take away one number from another
Down
  1. 1. all my sides are the same length
  2. 3. I am how to put numbers together
  3. 4. I am an angle always bigger than a right angle
  4. 5. I am used in degrees
  5. 6. I am a shape with 8 sides