Construction of Triangle Given Angles and Base Small 320×131 Medium 640×261 Large 1024×418 Download Tiff Original 2400×980 | (137.4 KB) Description Illustration used to construct a triangle given the length of the base and the two base angles. Keywords angle, base angles, construct, constructions, geometry construction, triangle, triangles Galleries Geometric Constructions Source: George G. Andre The Draughtsman's Handbook of Plan and Map Making (, : E. & F. N. Spon, 1891) Courtesy the private collection of Roy Winkelman