Geodaesia : or, The art of surveying and measuring land made easy (1768)
Love, John, fl. 1688, Clark, Samuel · London : Printed for J. Rivington · leaf 149
lel lines E C and G b,are therefore of the fame content. To fnd the content of a trapezium. Draw between two oppofite angles a ftrait line, asA B ; then is the trapezium reduced into two trian-gles, viz. ABC and ABD, which you may mea-fure as before taught; and, adding their products to-gether, you… … perpendicular D e, which let be 7 chains, 40 links;alfo C*/, 4 chains, 80 links; add the two perpendi-culars together, and they make 12 chains, 20 links;which multiply by half the common bafe A B, 18chains, 50 links, and the produdl is 22 acres, 2 roods,i1 perches, as appears by the operation…
Surveying
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