Math

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Across
  1. 3. a straight line segment
  2. 4. passes through the center of a circle
  3. 5. two times pie r squared
  4. 10. a shape of all points
  5. 11. pie times r squared
  6. 12. a plane
Down
  1. 1. A straight line that intersects a curve at two or more points
  2. 2. the middle of a circle
  3. 6. the distance from the center of a circle
  4. 7. a straight line segment whose endpoints are on the circles circumference
  5. 8. the mathematical constant representing the ratio of a circle
  6. 9. a line or plane that touches a curved surface