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What do cross-contour lines show on a rounded form?

Answer and explanation

Correct answer: Surface curvature and volume

Cross-contour lines travel across and around a form rather than merely tracing its outside edge. On a sphere or another rounded object, their changing curves indicate how the surface turns in space and help the viewer understand volume. Option A is correct. An outer boundary shows silhouette, while colour and paper direction do not explain three-dimensional curvature.

Related tags

Cross ContourCurvatureVolumeRounded FormSketchingDrawing BasicsArt EducationClass 9 Mcq

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