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. 76.

Join A E.

Then, by the second [Corollary] of [Problem II.], A E is a horizontal line.

Draw T V parallel to A E, cutting the sight-line in V.

∴ V is the vanishing-point of A E.

[p103]
]Complete the constructions of [Problem II.] and its second [Corollary.]

Then by [Problem II.]

a b

is the line A B drawn in perspective; and by its [Corollary]

a e