math

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Across
  1. 2. distance from center to edge of circle
  2. 7. angle an angle formed by two chords in a circle
  3. 9. the enclosing boundary of a curved geometric figure.
  4. 11. line is a line with a plane curve but it curves at the point.
  5. 12. a straight line passing through side by side.
  6. 13. is a half of a circle
  7. 15. a line segment that connects with a circle with two points
Down
  1. 1. the numeric value of pi
  2. 3. a ring shaped object
  3. 4. circles are circles with a common center the difference
  4. 5. a part of circumference and a circle
  5. 6. line is a curved line.
  6. 8. the circle.
  7. 10. of a circle point
  8. 14. angle is an angle with endpoints and is located in the middle