Illustration to show that a bisector of a an exterior angle of a triangle divides the opposite side into segments which are proportional to the adjacent sides.
G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 147
2400×1369, 135.0 KiB
1024×584, 17.2 KiB
640×365, 10.0 KiB
320×182, 4.7 KiB