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triangle question

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Source: — Data Sufficiency |
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by logitech » Fri Dec 19, 2008 6:01 pm
if AB=BC, the bisector with 90 degrees means Z=Z right triangle so x=y SUF

St2) no information for Zright. Insuf

Choose A
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by parallel_chase » Sat Dec 20, 2008 7:49 am
Statement I

x+z = 90

y+z = 90

therefore, x=y

Hence Sufficient.

Statement II

We can only find the value of x , we dont know if AB=BC

Insufficient.

Hence A.
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