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Why can drawing the iris as a perfect circle be incorrect in a three-quarter view?

Answer and explanation

Correct answer: The iris may appear elliptical because of the eyeball's rotation

The governing concept is perspective applied to a curved spherical form. Although the iris is approximately circular on the eyeball, a three-quarter view turns its plane away from the picture plane. Its projected width can therefore compress, making the visible shape elliptical rather than a perfect circle. Option B is correct; the iris is not square, and light or paper texture does not explain the geometric change.

Related tags

Iris PerspectiveEye RotationPortraitEllipseSketchingDrawing BasicsArt EducationClass 9 Mcq

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