Part of an Icosahedron
Illustration of the bottom part of an icosahedron. The base consists of a regular pyramid, upon which equilateral triangles are inserted to form the next section of the icosahedron.
Keywordspyramids, pentagon, solid, Polyhedron, icosahedron, solids, equilateral triangles, polyhedrons, icosahedrons, pentagonal pyramid
GalleriesMiscellaneous Solid Forms
Arthur Latham Baker The Elements of Solid Geometr with Numerous Exercises (Boston, MA: Ginn & Company, 1893)