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The point at which the line intersects the VP, extended if necessary, is known as ____________(a) profile trace(b) horizontal trace(c) vertical trace(d) auxiliary traceThis question was posed to me in semester exam.My question is based upon Projection of Straight Lines in division Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing

Answer»

Right choice is (c) vertical trace

Best explanation: If a line is parallel to any of the PLANE, it has no trace upon that plane. For EXAMPLE: If the line is parallel to HORIZONTAL plane then that line will not meet H.P and HENCE there will be no Horizontal Trace and only Vertical Trace.



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