is isosceles. 3. ABC is a triangle ha\nng the angle ABC double the angle BAG.If BD bisect the angle ABC, and meet AC in D, show that DA = DB. 4. If in the triangle ABC, the angles B and C be each double theangle A, and BD bisect the angle B, what three lines in the figureare equal to one another ?… … Let ABC, DEF be the As, having AB = DE, BC = EF, CA = FD. Then the As are equal in all respects. Apply the A DEF, so that E rests on B, aud EF on BC.Then F falls on C, since EF = BC.Let DEF take the position GBC. Join AG.Because BG = BA; .-. ZBGA = ZBAG. (Prop. 2.)Because CG = CA; .-. Z CGA = Z…
Geometry · Geometry, Plane
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