Tetrahedral angle


Also found in: Encyclopedia, Wikipedia.
(Geom.) a solid angle bounded or inclosed by four plane angles.

See also: Tetrahedral

References in periodicals archive ?
After building some models of tetrahedral frames, Gilman noticed taht his frames contained bent rings, each consisting of six struts attached together so that the angle between each pair of struts is the tetrahedral angle, or roughly 109.