MATHEMATICS PUZZLE

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Across
  1. 3. This angle measures more than 180 degrees but less than 360 degrees.
  2. 6. These numbers can be negative or positive
  3. 7. (3+7)=(7+3)is an example of which law?
  4. 9. 1, 4, 9, 16 and 25 are examples of __________ numbers.
  5. 10. This number leaves the original number unchanged under the operation.
Down
  1. 1. The measure of the distance around a shape.
  2. 2. This polygon has 8 sides
  3. 4. the difference between the highest data value and the lowest data value.
  4. 5. 3+(4+8)=(3+4)+8 is an example of which law?
  5. 8. The result that appears the most when given data