Math Crossword Definitions

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Across
  1. 2. The distance between any point and the center of a circle
  2. 4. A 3-D version of a rectangle
  3. 7. The outside of a circle
  4. 8. The outside of a 2-D shape
  5. 9. The inside units of a 2-D shape
  6. 10. A 3-D version of a triangle
Down
  1. 1. The inside of a 3-D shape
  2. 3. A line through the center of a circle
  3. 5. An irregular shape made with two or more shapes
  4. 6. The outside part of a 3-D shape
  5. 11. 3.14159265358979323846