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What do cross-contour lines clarify in the sketch of an irregular form?

Answer and explanation

Correct answer: Surface curvature and volume

The governing concept is cross-contour construction. These lines travel across or around a form and respond to its changing surface direction. On an irregular object, they can show bulges, depressions, turning planes, and the way the surface occupies space, thereby clarifying curvature and volume. Option D is correct; an outer boundary is a contour, while an object’s name and paper size are unrelated.

Related tags

Cross-Contour LinesSketchingSurface CurvatureVolumeIrregular FormsDrawing BasicsArt EducationClass 9 Mcq

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