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

Fig. 36.

If, instead of one square within another, it be required to draw one circle within another, the dimensions of both being given, inclose each circle in a square. Draw the squares first, and then the circles within, as in [Fig. 36.]

Fig. 35.

[Footnote 23: ] If either of the sides of the greater square is parallel to the plane of the picture, as D G in [Fig. 35.], D G of course must be equal to A C, and D H equal to B C/2, and the construction is as in [Fig. 35.]] [Return to text]

[p47]
][PROBLEM XIV.]

TO DRAW A TRUNCATED CIRCULAR CONE, GIVEN IN POSITION AND MAGNITUDE, THE TRUNCATIONS BEING IN HORIZONTAL PLANES, AND THE AXIS OF THE CONE VERTICAL.

Let A B C D, [Fig. 37.], be the portion of the cone required.