Smart, Edward Howard · London : Macmillian and Co. · leaf 109
required shape,but not necessarily of the required size. But by moving the plane of projection parallel to itself, wecan adjust the size as desired without altering the shape. Ex. Project a given triangle into an equilateral triangle, the linejoining the middle points of a pair of sides being… … Fig. 40. Then if FGEH be projected to infinity, ABCD is projectedinto a parallelogram, as the points of intersection of oppositesides project to infinity. If also FBE be projected into a right angle, the projectedfigure will be a rectangle. Lastly, if the angle GKH be projected into a right angle,…
Geometry, Projective
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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-86-129.webp)
