Geometry Crossword Puzzle

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Across
  1. 2. The ratio of the circumference of a circle to its diameter
  2. 3. The distance across the circle to the center
  3. 5. {..., -5, -4, -3, -2, -1, 0, 1, 2,...}
  4. 7. A number that cannot be written as a ratio of 2 integers
  5. 9. The distance from the outside of the circle to the center
  6. 10. The set of counting numbers
  7. 11. The set of the rational and irrational numbers
  8. 12. A number that can be expressed as the product of to equal integers
  9. 14. An angle with a measure greater than 90 and less the 180 degrees
  10. 15. A closed figure formed by three or more line segments that do not cross
  11. 16. A number that can be written as a ratio of 2 Integers
  12. 18. a figure formed by two rays common end points
  13. 19. To make less complicated, clearer, or easier
  14. 20. Interest that is applied to the initial amount only
Down
  1. 1. The distance around the circle
  2. 4. A number that can be written as a ratio of 2 integers
  3. 6. The set of counting numbers
  4. 8. An angle with a measure between 0 and 90 degrees
  5. 13. An angle with a measure of 90 degrees
  6. 17. A polygon with three sides