Elements of geometry : containing books I to III (1886)
Smith, J. Hamblin · Toronto : W.J. Gage · leaf 158
[OB I i A //. Join DO, and produce it to meel the arc ACB in C. Then v. .1 »twice/ AJDO, [II. 20. and BOC twice/ BDO, III. ^<>. IOC, /. twice stun of- - ADO, BI>0, tli.it is, .1/; twice ABB. <>. B. D. Note. In fig. I, 40JB is drawn a flal angle,I OB is drawn n reflex on Def. XII. The… … Let BAG, BDC I <■ angles in the same segment PA DC musti r.A< = t BDC First, when segmeni BADC is greati nirimle. From (), the centre, draw OB, • Kig. 1.) Then, v. /. =twice .BAC III 20. and . BOC=twieez /;/ III. 20.. . /;.! = _ /;/h«. Next, when seg e /..!/■ - ess than a m Let E be the pt.…
Geometry
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