Indirect Rhombohedra Small 320×265 Medium 640×530 Large 1024×848 Download Tiff Original 2400×1988 | (198.9 KB) Description "...consisting of six rhomb-shaped faces with the edges all of the equal lengths: the faces are perpendicular to the planes of symmetry." -The Encyclopedia Britannica 1910 Keywords Indirect, rhombohedra Galleries Prisms Source: Encyclopaedia Britannica (11th ed., vol. 7) (New York, NY: The Encyclopaedia Britannica Company, 1910)
