Supplementary Angles Small 320×149 Medium 640×297 Large 1024×475 Download Tiff Original 2400×1114 | (98.4 KB) Description Illustration that can be used to show supplementary angles. The angles form a straight line. Keywords angle, angles, straight, straight line, supplementary Galleries Supplementary Angles Source: International Correspondence Schools I.C.S. Reference Library Mathematics (Scranton: International Textbook Company, 1905) Geometry & Trigonometry Pg. 2 Courtesy the private collection of Roy Winkelman
