Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 32
Fig. 47. Fig. 48. From the above constructions it will be seen that, if the three sides of atriangle, or two sides and the included angle, or bne side and the two adjacentangles are known, the triangle can be constructed. Construct a triangle, ABC (Fig. 49). Extend the base to E, and drawB D…
Mechanical drawing
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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-31-34.webp)
