The Elements of Perspective / arranged for the use of schools and intended to be read in connection with the first three books of Euclid

by John Ruskin

And if any triangle, then any polygon.

A less complicated construction will, however, be given hereafter.[Footnote 18] ]

[Footnote 18: ] See page 96 ([note]), after you have read [Problem XVI].] [Return to text]

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][PROBLEM X.]

TO DRAW A PYRAMID, GIVEN IN POSITION AND MAGNITUDE, ON A SQUARE BASE IN A HORIZONTAL PLANE.

Fig. 25.

Let A B, [Fig. 25.], be the four-sided pyramid. As it is given in position and magnitude, the square base on which it stands must be given in position and magnitude, and its vertical height, C D.[Footnote 19] ]

Fig. 26.