Triangle DS! I think I got it right but my freaking computer : DS Archive
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# Triangle DS! I think I got it right but my freaking computer

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Triangle DS! I think I got it right but my freaking computer [#permalink]

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23 Jul 2006, 19:48
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Triangle DS!
I think I got it right but my freaking computer crashed
I was going through problems and taking screenshots-that is how I got it
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isosocelesds.jpg [ 78.2 KiB | Viewed 505 times ]

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23 Jul 2006, 20:22
<R?

Stmt1.
<T = 100 tells that <R = 40 : suff.

Stmt2.
<S = 40 : <R = 40, 70, or 100 : insuff.

Thus, A
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23 Jul 2006, 21:37
you are/were correct. it should be A.

from i, angle r = 40. suff.
from ii, it coud be 40 or 70. nsf.
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23 Jul 2006, 22:17
A

St1: If T = 100 then other angle can not be 100. It means other two angles are equal. So R = 40: SUFF

St2: If S = 40 then two possibilities (R = 40 and T = 100) or (T = 40 and R =100)
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23 Jul 2006, 23:29
Straight A. If one angle in an isos. triangle is 100, the other 2 angles must each be 40. Therefore 1 is sufficient.

If one angle is 40, the others may be 70 each, or 40 and 100. Hence 2 is insuff.
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25 Jul 2006, 03:48

1) One of the angles is 100.
In an isosceles trianlge two angles have to be equal. Since the other angle cannot be 100. Hence the other two angles should be equal to 40.

2) One of the angles is 40.

the other angle can be 70, 70 or 100, 40 etc.
Not Suff
25 Jul 2006, 03:48
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