Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 71
gures can be inscribed in all the regular polygonsthat have an even number of sides, by first dividing them into trapeziaand then proceeding by the method shown in Prob. 65 ; or they can bedrawn in circles divided into any number of equal sectors, by Prob. 106. CHAPTER VI.TANGENTS AND TANGENTIAL… … Fig. 122 85. To draw a tangent to agiven circle from a givenpoint A outside it. Find the centre C (Prob.32). Join AC, and bisectin B. From B as centre,and with BA as radius, de-scribe a semicircle cuttingthe circumference in D. JoinAD, and produce it. Thenthe line AD is the tangentrequired.
Geometrical drawing · Design · Drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
