Perspective and geometrical drawing adapted to the use of candidates for second and third-class teachers' certificates (1887)
McGuirl, Thomas H. [from old catalog] · Toronto, W. Briggs; · leaf 135
Let AB and BC be the given lines; draw AE, making anyangle with AC; make AD = BC; join BD, and through Cdraw CE parallel to BD, meeting AD produced : then willAB:BC::BC:DE. (Fig. 103.) If BC be greater than AB, DE will be a third proportionalgreater; but if BC be less than AB, DE will be less IS … Fig. 104. GEOMETRICAL DRAWING. 131 No. 29,—To draw a circle of given radius which shall touchboth lines of a given angle. Let BAC be the given angle and ST the given radius; bisectangle by line AF; erect on either line a perpendicular DEequal to ST; through E draw EG parallel to AD, and cuttingAF…
Geometrical drawing · Perspective
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
