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a | \ c | \ |x___\ b In the triangle above, is X > 90 ?

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a | \ c | \ |x___\ b In the triangle above, is X > 90 ? [#permalink] New post 21 Aug 2004, 16:27
|\
| \
a | \ c
| \
|x___\
b

In the triangle above, is X > 90 ?

A) a^2 + b^2 < 15
B) c > 4

Don't forget to explain your answer choice!
Director
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Re: geo - 2 [#permalink] New post 22 Aug 2004, 01:02
C
if c=5, x is acute if a^2+b^2<25, obtuse if a^2+b^2>25 and right if a^2+b^2=25
using 1 and 2 we can say that x is acute
Re: geo - 2   [#permalink] 22 Aug 2004, 01:02
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