Geometrical drawing, projection drawing, freehand and ornamental drawing, wash work and brush drawing, elementary perspective drawing, architectural drawing (1921)
International Correspondence Schools · Scranton, PA : International Textbook Co. · leaf 109
to accomphshthese true dimensions it is necessary to proceed as follows: On Sheet II where the cutting plane ab intersects the ele-ments of the pyramid at l,m,n,o, and p, lines are drawnperpendicular to ab, as //,, w w,, nn^, etc., and /, A isdrawn at any convenient point parallel to a b. Then,… … Vale Time con iu me J inexecuting this iheet .\a>ne uf SluJeitl. LtuM loitersand Aumber 3U §2 PROJECTION DRAWING 31 below hPt in the elevation {a) as shown at m^n^o, and />,.These points, being connected up by straight lines, outlinean irregular octagonal surface showing the true form of…
