Elements of geometry : containing books I to III (1886)
Smith, J. Hamblin · Toronto : W.J. Gage · leaf 157
ndicated by the dotted line, greater than tworight angles, and this we call a Reflex Axgle. To assist the learner, we shall mark these angles with dottedlines in the diagrams. Admitting the existence of angles, equal to and greater thantwo right angles, the Proposition last proved may be… … Tn the ■ ACBD, let the angles AOB (not lew than tworight angles) ai the centre, and ADB ai ii,< cirrumferetimihtended by tin same arc .1 //. Then mu I [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, /.…
Geometry
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