Triangle With Segment Extended for Exterior Angle Small 320×199 Medium 640×398 Large 1024×637 Download Tiff Original 2400×1493 | (3.4 MB) Description Illustration showing a triangle with an exterior segment drawn to show and exterior angle. This can be shown to show adjacent angles ACB and ACD as well. Keywords adjacent angles, angle, angles, exterior segment, geometry, lines, polygon, shape, side, Sides, straight line, triangle, triangles Galleries Miscellaneous Triangles Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 30
