The American house-carpenter; a treatise on the art of building, and the strength of materials (1867)
Hatfield, R. G. (Robert Griffith), 1815-1879 · New York, J. Wiley · leaf 56
Fig. 78. AMERICAN HOUSE-CARPENTER. 40 a c, will be the diameter of a circle, C, which will be equal in area to the two circles, A and B^ added together. Any polygonal figure, as A, [Fig. 72,) formed on the hypo-thenuse of a right-angled triangle, will be equal to two similarfigures,* as B and C,… … Fig. 73 105.— To construct a square equal to a given rectangle.Let A, {Fig. 73,) be the given rectangle. Extend the side, a 6,and make b c equal tob e; bisect a c in/, and upon/, with theradius, / a, describe the semi-circle, age; extend e 6, till itcuts the curve in g ; then a square, b g h d^…
Carpentry · Architecture
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-110-286.webp)
