Rectangle With Diagonals Small 320×159 Medium 640×317 Large 1024×507 Download Tiff Original 2400×1189 | (155.5 KB) Description Illustration to show that if the diagonals of a parallelogram are equal, the figure is a rectangle. Keywords angles, bisector, bisectors, diagonal, diagonals, equal, parallelogram, parallelograms, quadrilateral, quadrilaterals, rectangle, rectangles Galleries Quadrilaterals Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 72
