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A student draws an isometric ellipse with its major axis along the short diagonal of the enclosing rhombus. The result will

  • A.appear tilted out of the face it should lie in
  • B.be correct
  • C.be too large but correctly oriented
  • D.be too small but correctly oriented

Answer: A

Correct answer: appear tilted out of the face it should lie in

The ellipse representing a circle in an isometric face has its major axis along the *long* diagonal of the enclosing rhombus, perpendicular to the third isometric axis. Putting it on the short diagonal turns the ellipse through 90 degrees, and the result reads as a circle lying in a different plane - a mistake that is obvious at a glance once the rule is known and easy to make when it is not.

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