Q. 135.0( 2 Votes )

Let be a ray and let and be two rays on the same side of , with between and . Let be the bisector of AOB. Prove that

XOA + XOB = 2XOC

Answer :

12.JPG


⇒ ∠XOA + XOB


⇒ ∠XOA (XOA + AOB)


2XOA + 2AOC


2(XOA + AOC)


2XOC


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