Circle

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Across
  1. 2. a flat shape with four straight sides
  2. 6. a line segment from the center to the midpoint of one of its sides
  3. 7. a part of a circle lying between two straight lines drawn from the centre to the edge
  4. 10. an angle formed between the side of a shape and the side next to it, when this side is made longer
  5. 11. a flat shape with three straight sides and three angles; a thing in the shape of a triangle
  6. 12. is a circle that passes through all the vertices of the polygon
  7. 14. forming an angle of 90˚ with another line or surface; vertical and going straight up
  8. 15. is a triangle that has two sides of equal length
  9. 16. the external tangent
  10. 17. a flat shape with eight straight sides and eight angles
  11. 18. a straight line that intersects a curve at two or more points
  12. 20. a flat shape with at least three straight sides and angles, and usually five or more
  13. 21. a polygon with all sides and all angles equal
  14. 22. to divide sth into two equal parts
  15. 23. the act of intersecting sth
  16. 27. a flat shape with five straight sides and five angles
  17. 28. a line that goes around a circle or any other curved shape; the length of this line
  18. 29. a point defined for any triangle in a way that is independent of the triangle's placement or scale.
  19. 32. a flat shape with ten straight sides and ten angles
  20. 33. a flat shape with nine straight sides and nine angles
Down
  1. 1. a straight line going from one side of a circle or any other round object to the other side, passing through the centre
  2. 3. an angle formed inside a shape where two sides of the shape meet
  3. 4. a triangle whose three sides are all the same length
  4. 5. a flat shape with six straight sides and six angles
  5. 8. the common center of mass around which two or more bodies revolve
  6. 9. Inside triangle of circle
  7. 13. the Internal tangent
  8. 19. a flat shape with twelve straight sides and twelve angles
  9. 24. having four straight equal sides and four angles of 90˚
  10. 25. a straight line between the centre of a circle and any point on its outer edge; the length of this line
  11. 26. a flat shape with seven straight sides and seven angles
  12. 30. a straight line that joins two points on a curve
  13. 31. a straight line that touches the outside of a curve but does not cross it