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A cone with a region including its apex cut off by a plane is called a truncated cone; if the truncation plane is parallel to the cone's base, it is called a frustum. [1] An elliptical cone is a cone with an elliptical base. [1] A generalized cone is the surface created by the set of lines passing through a vertex and every point on a boundary ...
A right frustum is a right pyramid or a right cone truncated perpendicularly to its axis; [3] otherwise, it is an oblique frustum. In a truncated cone or truncated pyramid, the truncation plane is not necessarily parallel to the cone's base, as in a frustum.
Types of truncation on a square, {4}, showing red original edges, and new truncated edges in cyan. A uniform truncated square is a regular octagon, t{4}={8}. A complete truncated square becomes a new square, with a diagonal orientation. Vertices are sequenced around counterclockwise, 1-4, with truncated pairs of vertices as a and b.
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On engineering drawings, the projection is denoted by an international symbol representing a truncated cone in either first-angle or third-angle projection, as shown by the diagram on the right. The 3D interpretation is a solid truncated cone, with the small end pointing toward the viewer. The front view is, therefore, two concentric circles.
A conical hennin with black velvet lappets (brim) and a sheer veil, 1485–90. The hennin (French: hennin / ˈ h ɛ n ɪ n /; [1] possibly from Flemish Dutch: henninck meaning cock or rooster) [N 1] was a headdress in the shape of a cone, steeple, or truncated cone worn in the Late Middle Ages by European women of the nobility. [2]
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A tabun oven, or simply tabun (also transliterated taboon, from the Arabic: طابون), is a portable clay oven, shaped like a truncated cone. While all were made with a top opening, which could be used as a small stove top, some were made with an opening at the bottom from which to stoke the fire.