Circle Review

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Across
  1. 2. any twelve-sided polygon.
  2. 5. a polygon with four edges (or sides) and four vertices or corners.
  3. 6. the straight line that "just touches" the curve at that point.
  4. 7. a line segment from the center to the midpoint of one of its sides.
  5. 10. any six-sided polygon or 6-gon.
  6. 18. a new object that lies in each of original objects.
  7. 19. a triangle in which all three sides are equal.
  8. 20. any straight line segment that passes through the center of the circle and whose endpoints lie on the circle
  9. 24. the angle inside two adjacent sides of a polygon
  10. 27. the portion of a disc enclosed by two radii and a circular arc
  11. 28. a triangle that has two sides of equal length.
  12. 29. any seven-sided polygon or 7-gon.
  13. 30. any eight-sided polygon or 8-gon.
  14. 31. a line that intersects the curve in at least two (distinct) points.
  15. 32. a regular quadrilateral
  16. 33. any of the line segments from its center to its perimeter.
  17. 34. any five-sided polygon or 5-gon.
Down
  1. 1. a line segment joining two points on a curve.
  2. 3. grandfather
  3. 4. the center of mass of two or more bodies that orbit one another and is the point about which the bodies orbit.
  4. 8. a point defined for any triangle in a way that is independent of the triangle's placement or scale.
  5. 9. the set of points which are an equal distance to a fixed point
  6. 11. a circle that passes through all the vertices of the polygon.
  7. 12. a polygon with three edges and three vertices. It is one of the basic shapes in geometry.
  8. 13. inside grandfather
  9. 14. a plane figure that is described by a finite number of straight line segments connected to form a closed polygonal chain or polygonal circuit.
  10. 15. dividing something into 2 equal parts
  11. 16. a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length).
  12. 17. the (linear) distance around the circle.
  13. 21. an angle formed by one side of a simple polygon and a line extended from an adjacent side.[
  14. 22. any ten-sided polygon or 10-gon.
  15. 23. a triangle that is enclosed by and "fits snugly" inside a circle.
  16. 25. any nine-sided polygon or 9-gon.
  17. 26. he relationship between two lines which meet at a right angle (90 degrees).