ruled surface

noun

, Geometry.

1. a surface that can be generated by a straight line, as a cylinder or cone.

Word History and Origins

Origin of ruled surface¹

First recorded in 1860–65

Example Sentences

In this case, corresponding points will be joined by lines which do not lie in a plane, but on some surface, which like every surface generated by lines is called a ruled surface.

From Project Gutenberg

A Ruled Surface, Regulus or Skew is a configuration of lines which satisfy three conditions, and therefore depend on only one parameter.

From Project Gutenberg

Now from the form of the above equation this is a ruled surface, and through every point of it two generators pass.

From Project Gutenberg

The degree of a ruled surface qua line geometry is the number of its generating lines contained in a linear complex.

From Project Gutenberg

The lines common to three complexes of degrees, n1n2n3, form a ruled surface of degree 2n1n2n3; but not every ruled surface is the complete intersection of three complexes.

From Project Gutenberg