Elementary linear perspective of form and shadow ... Complete in itself ... For draftsmen, artists, and industrial drawing courses in preparatory and high schools, etc. In two parts.. (1891)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 61
ane its vertical projection will be in the ground line,hence, conversely, that point, as N, of the vertical projection of aline, which is in the ground Ihie, is the vertical projection of thatpoint, as N, which is in the horizontal plane (45). Hence the ray VE-VE pierces the horizontal plane at N,… … Fig. 28. elements, with the portion TA^ of the base, form the cones appa-rent contour. 3°.—JVow to find the perspective of this contour^ that is, of thecone. The preceding topics (1° and 2°) contain all that is peculiar tothis problem. The construction of the perspective is the same as inprevious…
Perspective · 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-129-355.webp)
