“Pentagonal Dipyramid”的概念、定义、习题解题方法及翻译-数学辞典

单词

Pentagonal Dipyramid

释义

Pentagonal Dipyramid

The pentagonal dipyramid is one of the convex Deltahedra, and Johnson Solid . It is alsothe Dual Polyhedron of the Pentagonal Prism. The distance between two adjacent Vertices on the base of the Pentagon is



			(1)

and the distance between the apex and one of the base points is

(2)

But

(3)

(4)

(5)

and

(6)

This root is of the form

, so applying Square Root simplification gives

(7)

where

is the Golden Mean.

See also Deltahedron, Dipyramid, Golden Mean, Icosahedron, Johnson Solid, TriangularDipyramid

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