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geometry

by sud21 » Thu Jan 12, 2012 4:39 am
In triangle ABC, P is a point on BC. Is AP=AB?
1) AB=BP
2). Angel APB is 60 degree
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Source: — Data Sufficiency |
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by neelgandham » Thu Jan 12, 2012 9:35 am
In triangle ABC, P is a point on BC. Is AP=AB?
1) AB=BP
Implies angle PAB = angle APB. Doesn't speak of angle ABP or side AP.
Insufficient
2). Angel APB is 60 degree
Again, we are not sure of the other dimensions.
Insufficient

From 1 and 2
angle PAB = angle APB =60 So, angle ABP = 60 and AB=BP=PA. Sufficient!

IMO C
Anil Gandham
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