Shapes

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Across
  1. 5. the mathematical word for a ball
  2. 7. the mathematical word for a tube
  3. 8. the tool that you use for drawing a circle
  4. 10. a solid in which all faces are rectangles
  5. 11. a plane shape with three (straight) sides
  6. 12. the distance from the midpoint of a circle to the edge
Down
  1. 1. a solid in which all faces are squares
  2. 2. a solid with one curved surface, one face, one edge and zero vertices
  3. 3. a set of points that are all equally far away from a midpoint
  4. 4. a quadrilateral with four right angles
  5. 6. a plane shape that has been 'extended' to make a solid; the plane shape is not a square or a rectangle
  6. 9. a quadrilateral with four right angles and four sides of equal length