Auxiliary Circle and Hyperbola Small 320×261 Medium 640×521 Large 1024×834 Download Tiff Original 2400×1955 | (206.0 KB) Description Illustration of a hyperbola and its auxiliary circle. "Any ordinate of a hyperbola is to the tangent from its foot to the auxiliary circle as b is to a." Keywords auxiliary circle, conic sections, foci, focus, hyperbola, hyperbolas, ordinate, point, section, tangent, y-coordinate Galleries Conic Sections: Hyperbolas Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 451
