Maths

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Across
  1. 2. The point where x axis and y axis
  2. 4. A closed figure made of several line segment
  3. 5. The set of positive and negative numbers
  4. 7. When looking at 7x the number 7 is a
  5. 8. A four side figure
  6. 9. Number that can be written in p/q
  7. 11. Two angles add up to 90
  8. 12. The space between two
Down
  1. 1. Both pairs of opposite sides
  2. 3. Can be a number or a variable or even the product of numbers
  3. 6. Two angles whose 180
  4. 10. In parrallelogram one of its angles is 90