An elementary treatise on modern pure geometry (1893)
Lachlan, Robert · London, New York, Macmillan and Co. · leaf 141
196. We may take the line at infinity in either figure as oneof our given lines. Then any line in the other figure which isparallel to the axis of perspective may be taken as the corresponding … line. The construction of F is very similar to the previousconstruction. Thus let a be the line at infinity, then a is a lineparallel to the axis of perspective. Draw any line through 0cutting a in A, then the corresponding point A oi F ]s at infinity.Draw any line A Y parallel to OA, cutting the…
Geometry
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