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Cone

A cone is a three dimensional geometric shape. It is the locus of all line segments between a simply connected region of a plane (the base) and a point (the apex) outside the plane.

There are four types of cones; circular, elliptical, right and oblique all of which are conic solids. All pyramids are also cones, in otherwords it is the generalization of a pyramid to non-polygonal bases. In common usage and elementary geometry, a cone refers to a right circular cone. The boundary of a conic solid is a conic surface. A cone with its apex cut off by a plane parallel to its base is called a truncated cone or frustum.

see also
  • Rectangle
  • Circle
  • Sphere
  • Cuboid
  • Cylinder

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    Fill the yellow fields to see the result in the green fields!
      A
    B
    C
    1 radius r    cm 
    2 height h    cm 
    3      
    4 volume V = 1/3*PI*r^2*h    cm3 
    5      
    6 surface area A    cm2 
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    (source: Cone (geometry). (2007, January 21). In Wikipedia, The Free Encyclopedia. Retrieved 15:47, January 23, 2007, from http://en.wikipedia.org/w/index.php?title=Cone_%28geometry%29&oldid=102200170)

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