Geometrical and graphical essays, containing a general description of the mathematical instruments used in geometry, civil and military surveying, levelling, and perspective (1807)
Adams, George, 1750-1795 · London : Dillon · leaf 376
the explanation of the method of plotting;there recommended; but it will not be improperto give them a place here again, together with thefurther columns for determining the area; in orderthat the whole, together with the respective usesof the several parts, may appear under one view,as follows.… … For, reasoning as before, the sum of the first mentioned pro-ducts will be double the area of QqoONMRQ + MRrmM;and the sum of the last mentioned products will be doublethe area of QqoOPQ-|-MRrmM. But it is evident, thatQqoOPQ—QqoQNMRQ=MNQPQRM: consequently,QqoOPQ-l-MRrmM —QqoONMRa-l-MRrmM =…
Mathematical instruments
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
