Math "X"-Word

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Across
  1. 2. Answer to a Division problem
  2. 4. The distance around a shape
  3. 5. Length x width
  4. 7. I have 4 equal sides
Down
  1. 1. An angle that measures exactly 90
  2. 3. Answer to a Subtraction problem
  3. 4. You find me in circles and eat me
  4. 6. Answer to a Multiplication problem
  5. 7. Answer to an Addition problem