Hicks' Builders' guide, comprising an easy, practical system of estimating material and labor for carpenters, contractors and builders (1907)
Hicks, I. P. (Isaac Perry), b. 1856 · New York, David Williams company · leaf 28
Fig. 15.—Finding Area of aRight-Angled Triangle. … AD C Fig. 16.—Finding Area of a Scalene Triangle. In Fig. 16 A B C represents a scalene triangle,which has no perpendicular line in reality, butfor convenience in estimating we draw one, which is THE BUILDERS GUIDE. 27 B D, dividing the triangle into two right-angled tri-angles of unequal areas. By…
Carpentry · Building
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