Such spherical triangles are called trirectangular. A sticker on the model reads: TR.ST. Location Currently not on view Credit Line Gift of Helen M. Wheeler date made ca 1945 ID Number MA.304723.709 ...

THE author of this book, who is one of the naval instructors on H.M.S. Britannia, has brought together the most important rules which are used in the solution of spherical triangles, and, after ...

Triangles are much more interesting than you ever imagined. We're going to disprove this fact with one picture. ... In other words, the larger the triangle is on a spherical shape, ...

A trihedral angle made from pieces of white plastic creates a spherical triangle joining these three points. For the pattern for this model, see 1979.3002.084. The pattern is dated 1945. Location ...