51Թ

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quadric surface

noun

  1. a three-dimensional surface whose equation is a quadratic equation.


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51Թ History and Origins

Origin of quadric surface1

First recorded in 1880–85
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Example Sentences

Examples have not been reviewed.

The surface itself is therefore called a quadric surface, or a surface of the second order.

From

ELLIPSOID, a quadric surface whose sections are ellipses.

From

The diameter of a quadric surface is a line at the extremities of which the tangent planes are parallel.

From

The tangent plane to a quadric surface either cuts the surface in two lines, or it has only a single line, or else only a single point in common with the surface.

From

The following propositions follow:— A quadric surface has at every point a tangent plane.

From

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