Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 178
e a right angle. These lines showby the angles they make with HPP, the angles that the verticalwalls of the object in perspective projection will make with thepicture plane (§ 102). 109. w*^ and m^ have been found, as explained in § 97, inaccordance with the rule given in § 98. VH^ should next be…
Architecture · Building
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