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Which entry method suits tracing an outline whose successive side lengths are known?

  • A.grid snap, picking each corner from the displayed grid
  • B.relative, measuring each point from the one before
  • C.absolute, measuring every point from the fixed origin
  • D.polar, measuring a radius of curvature at each corner

Answer: B

A chain of known displacements maps directly onto relative entry, since each side is given as an offset from the previous corner. The drawback is that an error early in the chain carries through to every point after it, which absolute entry avoids.

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