slant height

American  

noun

Geometry.

1. (of a right circular cone) the distance from the vertex to any point on the circumference of the base.

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Etymology

Origin of slant height

First recorded in 1790–1800

Example Sentences

Let r1 and r2 be the radii of the wide end and the narrow end of the frustum, respectively, and let l be the slant height of the frustum as shown in the following figure.

From Textbooks • Mar. 30, 2016

Note that the slant height of this frustum is just the length of the line segment used to generate it.

From Textbooks • Mar. 30, 2016

The lateral area of a regular pyramid is equal to half the product of its slant height by the perimeter of its base.

From The Teaching of Geometry by Smith, David Eugene

The lateral area of a frustum of a cone of revolution is equal to half the sum of the circumferences of its bases multiplied by the slant height.

From The Teaching of Geometry by Smith, David Eugene