TO FIND THE VANISHING-POINT OF A GIVEN HORIZONTAL LINE.
[Illustration: Fig. 9.]
Let _AB_, Fig. 9., be the given line.
From _T_, the station-point, draw _TV_ parallel to _AB_, cutting the
sight-line in _V_.
_V_ is the Vanishing-point required.[14]
The Elements of Perspective arranged for the use of schools and intended to be read in connection with the first three books of Euclid · 第 17 / 91 题