Construction of the side of the 10 gone \(k_1\) and of the side of 5 gone \(k_2\).

zbMath15.0479.05MaRDI QIDQ1546511

J. P. Gram

Publication date: 1883

zbMATH Keywords

rectangular trianglesPtolemy`s theoremregular decagonsregular pentagonsrelationship between different strings

Mathematics Subject Classification ID

Polyhedra and polytopes; regular figures, division of spaces (51M20) Buildings and the geometry of diagrams (51E24) Geometric constructions in real or complex geometry (51M15)

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