Equal Right Triangles by Hypotenuse Leg Small 320×123 Medium 640×246 Large 1024×394 Download Tiff Original 2400×924 | (2.1 MB) Description Illustration showing two equal right triangles. This can be used to show that two right triangles are equal if a leg and the hypotenuse of the one are equal, respectively, to a leg and the hypotenuse of the other. Keywords angle, angles, equal, geometry, HL, hypotenuse leg, polygon, right, shape, side, triangle, triangles Galleries Miscellaneous Right Triangles Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 39 Courtesy the private collection of Roy Winkelman