The builder's dictionary, or, Gentleman and architect's companion : explaining not only the terms of art in all the several parts of architecture, but also containing the theory and practice of the various branches thereof ... : also necessary problems in arithmetic, geometry, mechanics, perspective, hydraulics, and other mathematical sciences : together with the quantities proportions, and prices of all kinds of materials used in building ... (1734)
Toms, W. H. (William Henry), ca. 1700-ca. 1750, Devoto, John, fl. 1719-1752 · London : Printed for A. Bettesworth and C. Hitch ..., and S. Austen ... · leaf 219
Rhoraboidcs. QUADRANT [in Geome-try] is an Arch of a Circle con-taining 90 Degrees, or one 4thof the intire Periphery • andis alio the Space contained be-tween a cj^uadrantal Arch andtwo Radii perpendicular oneto another, in the Center ofa Circle. QUADRANT is the fourthPart of a Circle. To find the… … Let ABC be a Quadrant orfourth part of a Circle, whofcRadius or S^midiameter is 11.3,and the half arch Line 8.875 ;thcfe n}ultiplyd together, theProduct is IC0.2875 ^o^ ^^^ ^-rca. Thefe are the Rules andWays commonly given for find-ing the Area of a Semicircle
Architecture · Building
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