The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 92
32. To construct a pentagonon a given line A B (Fig. 32).—From B erect a perpendicular B Chalf the length of i 5; join A C and.prolong it to D, making C D = B C.Then B D is the radius of the circlecircumscribing the pentagon. FromA and B as centres, with B D asradius, draw arcs cutting each otherin… … 44 GEOMETRICAL PROBLEMS.
Mechanical engineering
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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-56-88.webp)
