Ellipse Small 191×320 Medium 381×640 Large 610×1024 Download Tiff Original 1429×2400 | (191.6 KB) Description Illustration showing an ellipse formed by the intersection of the surface of a cone with a plane neither parallel nor perpendicular to a straight line of the surface of the cone nor the axis. Keywords cone, cones, conic section, ellipse, ellipses, sections Galleries Conic Sections: Ellipses Source: Frederick Converse Beach Encyclopedia Americana (New York, NY: Americana Company, 1903)
