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 40
fequal areas and two trapezoids of equal areas. E Gmultiplied by G A will give the area of the two tri-angles. Half the sum of D C and E B multiplied byG F will give he area of the two trapezoids. Thetwo areas added will give the total area. To find the area of an irregular pentagon, we willlet A B… … Fig. 38.—Finding Area ofRegular Pentagon. Fig. 39.—Finding Area of anIrregular Pentagon. dicular distance from their vertices to the oppositesides, called the base and shown by the lines E F,A G and B H. This divides the figure into six rightangled triangles of unequal areas. A D multiplied byhalf…
Carpentry · Building
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