Illustration of a trapezoid, with the median drawn. The median of a trapezoid is parallel to the bases, and is equal to half the sum of the bases.
G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 55
2400×1438, 148.9 KiB
1024×613, 21.9 KiB
640×383, 13.6 KiB
320×191, 5.9 KiB