Dihedral Angle Small 318×320 Medium 637×640 Large 1018×1024 Download TIFF Original 2387×2400 | (360.6 KB) Description A dihedral angle is the opening between two intersecting planes. Keywords angles, dihedrals, intersection, plane Galleries Miscellaneous Angles Source: Arthur Latham Baker The Elements of Solid Geometr with Numerous Exercises (Boston, MA: Ginn & Company, 1893)