Conic Section Showing An Ellipse Small 299×320 Medium 598×640 Large 957×1024 Download Tiff Original 2242×2400 | (211.7 KB) Description An illustration showing the intersection of a plane and a cone. The cone is intersected by a plane neither parallel to nor perpendicular to the base, nor parallel to a side. Thus forming an ellipse. Keywords cone, cones, conic sections, ellipse, ellipses, section Galleries Conic Sections: Ellipses Source: Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 30
