Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 76
ne of which are parallel; the third line to be drawn to cutthe other two. Let AB, CD, and EF be the three given lines. Bisect the four j3 angles AFE, BFE, CEF,and DEF by lines meetingat H and L. From H andL draw the lines HM andLN perpendicular to CD(Prob. 7). With H ascentre, and radius HM,draw a… … TANGENTS AND TANGENTIAL ARCS. 63 97. To draw DIRECT COMMON TANGENTS tO tWO given circles of unequal radii. Let AC be the radius of one circle, and BD of the other. Join the centres A and B. ,.--- --.^ From the centre A draw ~^!^^^^^==r?==~—____^a circle with a radius /^ ^-j N^ ~~y>:^—J- = AC-BD.…
Geometrical drawing · Design · Drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
