Foci Distance of Hyperbola Small 320×158 Medium 640×316 Large 1024×506 Download Tiff Original 2400×1186 | (145.0 KB) Description Illustration of a hyperbola with distances to foci drawn. "The difference of the distances of any point from the foci of an hyperbola is greater than or less than 2a, according as the point is on the concave or convex side of the curve." Keywords conic sections, curve, focal distances, foci, focus, hyperbola, hyperbolas, length, point, section Galleries Conic Sections: Hyperbolas Source: G.A. Wentworth Plane And Solid Geometry (Boston: Ginn & Company, 1899) 453