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An oblique projection differs from an orthographic one in having projectors that are

  • A.convergent upon the observer's eye
  • B.of continuously varying direction across the object
  • C.parallel but inclined to the plane of projection
  • D.perpendicular to the plane of projection

Answer: C

Correct answer: parallel but inclined to the plane of projection

An oblique projection keeps the projectors parallel, so it shares orthographic’s freedom from convergence, but inclines them to the plane. The consequence is that one face is drawn true while the receding edges are pushed off at an angle, giving a pictorial view from a single drawing - useful for illustration, but the receding dimensions are foreshortened.

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