Puzzle party

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Across
  1. 2. number that can be expressed as a ratio of integers
  2. 6. type of angle greater than 90 degree
  3. 9. maths concept related to rate of change
  4. 10. Polygon with five sides
Down
  1. 1. Mathematical statement with equal to sign
  2. 3. Type of triangle with two equal sides
  3. 4. Mathematical expression involving numbers and variable
  4. 5. shape with four right angles
  5. 7. mathematical operation for sharing
  6. 8. Unit of measurement for angles