Conic Axes Small 320×294 Medium 640×588 Large 1024×941 Download Tiff Original 2400×2206 | (231.2 KB) Description Conjugate diameters perpendicular to each other are called, axes, and the points where they cut the curve vertices of the conic. Keywords axes, circle, concentric, conic sections, conics, construction, hyperbola Galleries Conic Sections: Hyperbolas Source: Encyclopaedia Britannica (New York: The Encyclopaedia Britannica Company, 1910) 11:700