A treatise on surveying and navigation: uniting the theoretical, practical, and educational features of these subjects (1857)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst; Toledo, Anderson, Burr, & co. · leaf 77
he two perpendiculars let fall on it from the two opposite corners, measured as below, required the content. AP = 110 links AQ = 745 AB == 1110 CP= 352 DQ= 595 Ans. 4 acres, 1 rood, 5.792 perches. Here we perceive a trapezoid and two right angled triangles.N. B. A chain is 4 rods, and contains 100… … MENSURATION 75 Or thus, let fall two perpendiculars on the diagonal from the othertwo opposite angles ; then add these two perpendiculars together,and multiply that sum by the diagonal, taking half the product forthe area of the trapezium. Ex. 1. To find the area of the trapezium, whose diagonal is…
Surveying · Navigation
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