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Vertices of a triangle have coordinates , , and . Is the

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Vertices of a triangle have coordinates , , and . Is the [#permalink] New post 07 Sep 2008, 22:58
Vertices of a triangle have coordinates [-1,0] , [4,0] , and [0,A] . Is the area of the triangle bigger than 15 ?
1. A<3
2. The triangle is right
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Re: right or not? [#permalink] New post 07 Sep 2008, 23:27
I will go for B.

For stmt 1, A can be -4, -5, -10, etc. In this case, the area of triange can be < than or > than 15.
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Re: right or not? [#permalink] New post 07 Sep 2008, 23:47
Agree on B.

S2 tells us the hypotenuse=5, therefore the legs can't be greater than 5.

(>5)(>5)=(>25)/2 = (>12.5) SUFF.
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Re: right or not? [#permalink] New post 08 Sep 2008, 01:50
Ops, you are right.
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Re: right or not?   [#permalink] 08 Sep 2008, 01:50
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Vertices of a triangle have coordinates , , and . Is the

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