Math Crossword Puzzle

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Across
  1. 2. An input has only on output
  2. 7. Plus
  3. 8. An angle that is larger than 90 degrees
  4. 10. Polygons with four sides are called quadrilaterals. Different quadrilaterals are named for the relationships of angles and sides.
  5. 11. A number that has no fractions or decimals
  6. 12. Start
  7. 14. Letters in Equations
  8. 16. Tall
  9. 18. The average
  10. 19. An angle smaller than 90 degrees
  11. 21. Second Power
  12. 22. The sum of the lengths of all of the sides of a polygon. The sides are measured in linear units such as feet, yards, or meters.
Down
  1. 1. Top of Fraction
  2. 3. Circumference
  3. 4. The measure of the interior space of a three-dimensional figure.
  4. 5. Third Power
  5. 6. Minus
  6. 9. Bottom
  7. 13. A two-dimensional pattern that can be folded to form a three-dimensional figure.
  8. 15. Total
  9. 17. A number times its self
  10. 20. How long a shape is