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Deltoidal hexecontahedron
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==Lengths and angles== The 60 faces are deltoids or [[kite (geometry)|kites]]. The short and long edges of each kite are in the ratio <math display="inline">1:\frac{7+\sqrt{5}}{6}</math> β 1:1.539344663... The angle between two short edges in a single face is <math display="inline">\arccos(\frac{-5-2\sqrt{5}}{20})</math> β 118.2686774705Β°. The opposite angle, between long edges, is <math display="inline">\arccos(\frac{-5+9\sqrt{5}}{40})</math> β 67.783011547435Β°. The other two angles of each face, between a short and a long edge each, are both equal to <math display="inline">\arccos(\frac{5-2\sqrt{5}}{10})</math> β 86.97415549104Β°. The dihedral angle between any pair of adjacent faces is <math display="inline">\arccos(\frac{-19-8\sqrt{5}}{41})</math> β 154.12136312578Β°.
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