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A point 40 mm above the horizontal plane and 25 mm in front of the vertical plane has its elevation and plan respectively

  • A.40 mm below and 25 mm above the reference line
  • B.both 40 mm from the reference line
  • C.40 mm above and 25 mm below the reference line
  • D.25 mm above and 40 mm below the reference line

Answer: C

Correct answer: 40 mm above and 25 mm below the reference line

Height above the horizontal plane appears in the elevation, measured above the reference line, and distance in front of the vertical plane appears in the plan, measured below it after the planes are opened out. So the elevation sits 40 mm above and the plan 25 mm below, on the same projector.

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