A guide to pictorial perspective : with numerous illustrations (1851)
Green, Benjamin Richard, 1808-1876 · London : George Rowney and Co. · leaf 51
then proceeding as before … OBJECTS HAVING MORE THAN FOUR SIDES. 31 But in free-hand drawing this practice may be dispensedwith; it will be advantageous, however, (with the formerespecially) to keep in view the analogy between them andthe square, as it will be seen that there are many linescommon to both figures to which the…
