Equiangular Triangle Small 291×320 Medium 583×640 Large 933×1024 Download Tiff Original 2400×2635 | (383.6 KB) Description Illustration showing an equiangular triangle (one that has all three angles that are equal). Keywords acute, angle, angles, equal, geometry, polygon, shape, side, triangle, triangles Galleries Miscellaneous Triangles Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 30