A [[wp:pentagram|pentagram]] is a star polygon, consisting of a central pentagon of which each side forms the base of an isosceles triangle. The vertex of each triangle, a point of the star, is 36 degrees.
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;Task:
Draw (or print) a regular pentagram, in any orientation. Use a different color (or token) for stroke and fill, and background. For the fill it should be assumed that all points inside the triangles and the pentagon are inside the pentagram.
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;See also
* [http://proofsfromthebook.com/2013/08/04/angle-sum-of-a-pentagram/ Angle sum of a pentagram]
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