Cycloids Small 320×163 Medium 640×326 Large 1024×521 Download Tiff Original 2400×1222 | (172.7 KB) Description Illustration showing cycloid curves. "The curve generated by a point in the plane of a circle when the circle is rolled along a straight line and always in the same plane." Keywords analytic geometry, curve, cycloid curves Galleries Analytical Geometry Source: Frederick Converse Beach Encyclopedia Americana (New York, NY: Americana Company, 1903)