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How does parametric modelling differ from plain drafting?

  • A.geometry is governed by dimensions and constraints
  • B.geometry is stored as pixels rather than as entities
  • C.geometry cannot be dimensioned once created
  • D.geometry must be created at the plotting scale

Answer: A

Changing a driving dimension causes the model to rebuild itself with the relationships preserved, so design intent is captured rather than merely a picture. In plain drafting the geometry has no memory of why it was drawn as it was.

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