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any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent
a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms
a pyramid whose base is a regular polygon and whose lateral faces are congruent isosceles triangles
lateral surface of a cone
LSA = ½PL
(P is the perimeter/circumference of the base, L is the slant height)
A cone in which a perpendicular line drawn from the base to the tip (vertex) passes through the center of the base
a three-dimensional closed surface such that every point on the surface is equidistant from the center
center of a sphere
The point inside a sphere that is the same distance from every point on the sphere.
radius of a sphere
a segment that has one endpoint at the center and the other endpoint on the sphere
a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
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