An encyclopaedia of architecture, historical, theoretical, & practical. New ed., rev., portions rewritten, and with additions by Wyatt Papworth (1888)
Gwilt, Joseph, 1784-1863, Papworth, Wyatt Angelicus Van Sandau, 1822-1894 · London Longmans, Green · leaf 342
nus (_fi(/. 4G9.), its projection on each will be a rectangle,whose length will vary in jjroportion to the difference between the side and the diagonalof the scjuare. The motion of the opposite arrisses will, on the contrary, produce arectangle whose width will be constant in all the dimensions… … Fig. 470. Fig. 471. plane its projection ADBC is shown, being thereon represented by a circle, and upon vertical plane by the rectangle ffcdk.
Architecture · Architects
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