Unit 1ProjectionsMEDIUM

Line Contained in a Given Plane

A plane makes 35° with HP and is perpendicular to VP. A line PQ, 55mm long, lies in this plane with P 25mm above HP. Draw projections of the line.

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Solution Diagram

Solution diagram for Line Contained in a Given Plane
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Step-by-Step Construction

  1. 1

    Draw the plane's traces (line of intersection with HP and VP)

  2. 2

    Since plane is perpendicular to VP, VT is perpendicular to XY

  3. 3

    HT makes 35° with XY

  4. 4

    Line PQ must lie on this plane, so its traces must lie on plane's traces

  5. 5

    Draw line with P at 25mm above HP, length 55mm, contained in the plane

  6. 6

    Verify by checking if line's traces coincide with plane's traces

Pro Tips

  • •Always verify your measurements with a scale before finalizing the drawing
  • •Use construction lines lightly and darken the final solution
  • •Label all important points and reference lines clearly

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