Jamison, Alpha Pierce. [from old catalog] · New York, J. Wiley & sons; · leaf 77
ectedseparately, the circles being projected as explained. 78. Problem 4.—Projections of a Frustum of a HexagonalRight Pyramid and its Development. — Let the pyramid beassumed as resting on the horizontal plane, and let its position 5* MECHANICAL DRAWING. with reference to the vertical plane be… … Pyramid. Fig. 21. frustum not, as yet, entering into the problem. The draw-ings are constructed in the order numbered, that the edges of 2may be projected from 1. Now that the pyramid is fixed, let
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-198-409.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-194-407.webp)
