Angle of Two Planes Small 320×251 Medium 640×502 Large 1024×803 Download Tiff Original 2400×1881 | (187.7 KB) Description To determine the angle between two planes. Keywords angle, planes Galleries Descriptive Geometry Source: Encyclopaedia Britannica (New York: The Encyclopaedia Britannica Company, 1910) 11:709 Courtesy the private collection of Roy Winkelman
