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Ruled surface by two surfaces is formed by moving a segment tangent to two surfaces. The length of the segment is bounded by the points of tangency with the surfaces. In each of its positions, the segment is in the plane which is perpendicular to the specified straight-line direction or the curved line.

Variants of constructing a ruled surface by two cylindrical faces are shown in the figures.

Variants of a ruled surface constructed by two cylindrical faces

See Also

Plotting a ruled surface by two surfaces

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