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Calculating the Projection of a Point on a Non-rotational Quadric Surface with the Method of Auxiliary Ellipse Cone

NIE Yangsun

(Mechanical Engineering)

Abstract：This paper discusses the graphical method of finding the projection of a point on an elliptical cone, and proposes and demonstrates the use of the auxiliary elliptic cone method to find the projection of a point on some non-rotational quadric surface with an ellipse.

Keywords：graphical method， a non-rotational quadric surface

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