The carpenter's and joiner's hand-book: containing a complete treatise on framing hip and valley roofs. Together with much valuable instruction for all mechanics and amateurs, useful rules, tables, etc. ... Illustrated by thirty-seven engravings (1863)
Holly, H. W. (Henry Wells) · Norwich, Conn., Published by H. W. Holly · leaf 37
e the circle cutting the outside lineat c and d; repeat the same at each corner,and draw lines c e, f g, h d, and ij. Theselines will form the octagon desired 25. To draw a hexagon or six-sided fig-ure on a circle. Each side of a hexagon drawn within acircle is just half the diameter of that… … &c, and you have an exact hexagon. Joinb, d, and/, and you have an equilateral tri-angle ; join d, e, and the centre, and youhave another triangle, just one-sixth of thehexagon described. 26. To describe a citrve by a set triangle.
Carpentry
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![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-27-23.webp)
![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-124-341.webp)
