![Self-dual polyhedra / Tetrahedron / Rotation matrix / Platonic solid / Proofs of trigonometric identities / Geometry / Trigonometry / Deltahedra Self-dual polyhedra / Tetrahedron / Rotation matrix / Platonic solid / Proofs of trigonometric identities / Geometry / Trigonometry / Deltahedra](https://www.pdfsearch.io/img/587f23c23c06384b443fb9769952771b.jpg) Date: 2013-01-30 12:49:13Self-dual polyhedra Tetrahedron Rotation matrix Platonic solid Proofs of trigonometric identities Geometry Trigonometry Deltahedra | | The quartic equation: alignment with an equivalent tetrahedron 1 RWD Nickalls 2 The Mathematical Gazette (2012); vol. 96 (March, No 535), pp. 49–55 www.nickalls.org/dick/papers/maths/tetrahedron2012.pdfAdd to Reading ListSource URL: www.nickalls.orgDownload Document from Source Website File Size: 510,49 KBShare Document on Facebook
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