Category:Pentagramma mirificum
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a star polygon on a sphere, composed of five great circle arcs, whose all internal angles are right angles. | |||||
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Media in category "Pentagramma mirificum"
The following 2 files are in this category, out of 2 total.
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Pentagramma-mirificum.gif 348 × 357; 611 KB
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Pentagramma-mirificum.png 696 × 698; 70 KB