DescriptionPtolemy Pentagon.svg English: Application of Ptolemy's theorem to the quadrilateral made by removing a vertex from a regular pentagon yields b/a...
English Ptolemy's theorem on the regular pentagon. Greek Το θεώρημα Πτολεμαίου για το κανονικό πεντάγωνο. determination method: SHA-1...
DescriptionPtolemy Pentagon2.svg English: Derivative of Ptolemy Pentagon.svg Date 16 October 2008 Source Dick Lyon Author N.L. Parker...
DescriptionPtolemy Pentagon4.svg English: Square on the Pentagon chord equals square on decagon chord plus square on hexagon chord. Date 16th October...
Decagon.jpg English: Find side of decagon Date 31st March 2008 Source modified Wikipedia image Author Neil Parker (talk) Other versions Ptolemy_Pentagon.svg...
Pentagon Geometry Ptolemy.svg English: Ptolemy's Regular Pentagon construction Date 14 December 2013, 17:47:22 Source Own work Author Aldoaldoz SVG development...
DescriptionMascheroni Pentagon (Ptolemy).svg Italiano: Mascheroni, Geometria del Compasso, Costruzione del Pentagono Regolare (Tolomeo) English: Mascheroni...
DescriptionPtolemy Pentagon3.svg English: Calculating Pentagon chords Date 16th October 2008 Source Ptolemy Pentagon: Dick Lyon Author N.L. Parker Permission...
DescriptionPtolemy Pentagon5.svg English: Graphic for article on Ptolemy's Theorem Date 31st October 2008 Source Adapted from the diagram illustrating...
DescriptionPtolemy Pentagon6.svg English: Diagram used in determination of chord subtending sum of arcs Date 23rd November 2008 Source Theorema Quintum:...
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