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How would cross-contour lines appear on a cylindrical object?

Answer and explanation

Correct answer: Curved according to the roundness of the surface

Cross-contour lines describe how a surface turns through space. On a cylinder, lines crossing its length usually curve around the rounded body, following its circular or elliptical direction. Therefore option A is correct: the curves help the viewer understand volume. Straight horizontal marks may ignore the form, an outer boundary is a contour rather than a cross-contour, and random dots do not describe continuous surface direction.

Related tags

Cross ContourCylinderVolumePencil DrawingDrawing BasicsArt EducationClass 9 Mcq

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