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ICOSAHEDRON |
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The
icosahedron is a regular polyhedron with equilateral triangular faces
and in which all the vertices receive 5 edges. It is the joining of a
regular pentagonal antiprism with two regular pentagonal pyramids. It
forms a very stable and interesting dome. |
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How many triangular pyramids could an icosahedron decompose into? | |
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Solution | |
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