Quadrilateral With Diagonals Small 320×231 Medium 640×462 Large 1024×739 Download Tiff Original 2400×1731 | (208.9 KB) Description Illustration to show that if the diagonals of a quadrilateral bisect each other, the figure is a parallelogram. Keywords angles, bisector, bisectors, diagonal, diagonals, parallelogram, parallelograms, quadrilateral, quadrilaterals Galleries Quadrilaterals Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 72
