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What does a geometric constraint such as perpendicularity do in a parametric sketch?

  • A.it moves the entity to a dedicated layer
  • B.it holds a relationship as the geometry changes
  • C.it fixes the length of that entity permanently
  • D.it prevents the entity from being deleted

Answer: B

The relationship survives every subsequent edit, so two lines drawn perpendicular stay perpendicular however the sketch is dragged. Dimensional constraints fix sizes and geometric constraints fix relationships, and a sketch needs both.

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