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An isometric drawing differs from an isometric projection in using

  • A.orthographic rather than pictorial views
  • B.true lengths rather than foreshortened ones
  • C.foreshortened lengths rather than true ones
  • D.a different set of axes altogether

Answer: B

Correct answer: true lengths rather than foreshortened ones

A true isometric projection foreshortens all three axes to 0.816 of their real length. An isometric drawing dispenses with that and sets off true lengths along the axes, so the figure is about 22 per cent larger than the projection but identical in shape and far easier to construct - which is why it is what is almost always drawn.

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