pentagram
Pentagram
1. a star-shaped figure formed by extending the sides of a regular pentagon to meet at five points
2. such a figure used as a magical or symbolic figure by the Pythagoreans, black magicians, etc.
Pentagram
a regular pentagon on whose sides are constructed isosceles triangles of identical height. In particular, the triangles can be equilateral or can be formed by extending the side of the pentagon. In the latter case the pentagram is a star-
Figure 1
shaped polygon that can also be formed by the diagonals of a regular pentagon (see Figure 1).
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