Tiling a Sphere with Special Right Triangles
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This Demonstration shows the tiling of a sphere using spherical right triangles with dihedral angles of , and . The triangles can tile in exactly three different ways .
Contributed by: Izidor Hafner (March 2017)
Open content licensed under CC BY-NC-SA
 R. J. MacG. Dawson and B. Doyle, "Tilings of the Sphere with Right Triangles I: The Asymptotically Right Families," The Electronic Journal of Combinatorics, 13, 2006 Research Paper #R48, www.combinatorics.org/ojs/index.php/eljc/article/view/v13i1r48.
"Tiling a Sphere with Special Right Triangles"
Wolfram Demonstrations Project
Published: March 22 2017