CIRCLE

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Across
  1. 1. the set of points which are an equal distance to a fixed point
  2. 5. a polygon with equal-length sides
  3. 8. 90 degrees
  4. 11. a point where all perpendicular bisector of a triangle meet
  5. 12. when two circle are meeting at only 1 point, and they are located at two distinct sides of their common tangent line
  6. 13. 8 sides polygon
  7. 18. a special rectangle
  8. 19. when two lines meet
  9. 21. the half of the diameter
  10. 23. when two circle are meeting at only 1 point, and they are located at the same side of their common tangent line
  11. 25. a triangle that has all 3 vertices on a circle
  12. 30. a shape consisted of three equal-length sides
  13. 31. a point where all angular bisector of a triangle meet
  14. 32. 5 sides polygon
  15. 34. split something into 2 identical parts
Down
  1. 2. a triangle that has two equal-length sides
  2. 3. a part of a circle
  3. 4. 7 sides polygon
  4. 6. an angle located at the inside of a circle
  5. 7. a shape with multiple sides
  6. 9. a circle that passes through all the vertices of a polygon
  7. 10. 9 sides polygon
  8. 14. the perimeter of a circle
  9. 15. a line passing through a circle at 2 points
  10. 16. the diameter is a type of ___
  11. 17. 6 sides polygon
  12. 20. a polygon with 3 sides
  13. 22. a four sided polygon
  14. 24. 12 sides polygon
  15. 26. an angle located at the outside of a circle
  16. 27. a line passing through a circle at 1 point
  17. 28. 10 sides polygon
  18. 29. the longest chord of a circle
  19. 33. the distance between the centre of a circle and its chord