Illustration of a conical bifrustum created by three parallel planes of circles with the middle plane largest. The top and bottom circles are congruent. It is constructed from two congruent frustums across a plane of symmetry.
Keywordscone, pyramid, circle, circles, pyramids, cones, frustum, frusta, bipyramids, parallel planes, frustums, bifrustum, truncated bipyramid, conical bifrustum
Florida Center for Instructional Technology Clipart ETC (Tampa: University of South Florida, 2007)