Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 256
. JoinHB, which gives the edge of the ieosahedron. AB:EBAB:AEAB:rB :V3:1.:V2:L Take a line HB equal to HB (Fig. 38),and construct an equilateral triangleupon it (Fig. 39); describe a circleabout it; and inscribe a regular pen-tagon in the same circle, then each sideof the pentagon is equal to the… … Fig. 39. CHAPTEE XX OCTAGONAL PYEAMIDS, CONES, AND CYLINDERS OCTAGONAL PYRAMIDS. Peoblem 29. To -project a regular octagonal pyramid, 8 high, with each sideof its base 2-|- ividc, standing on its hase on the H.P., tvith anedge of its hase parallel to the V.P. a7id 2^ from it. Scale ^fidl size. Eig.…
Geometrical 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-31-35.webp)
