Plane and solid analytic geometry; an elementary textbook (1901)
Ashton, Charles H. (Charles Hamilton), 1866- · New York, C. Scribner's sons · leaf 257
Eig. 18. The section of the surface made by the X-F-plane is anhyperbola, with its transverse axis 2 a along the X-axis;the section made by the Z-X-plane is also an hyperbola,with its transverse axis 2 a along the X-axis; the sectionby the P-^-plane is imaginary. Sections made by planes parallel to…
Geometry, Analytic
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