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Triangles

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Master | Next Rank: 500 Posts
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Triangles

by beater » Mon Oct 13, 2008 1:45 pm
Please solve
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by kris610 » Mon Oct 13, 2008 3:22 pm
Will be D.

Exterior angle v = x+y.

A gives you v directly.

B gives you w from which you can calculate v as v = w = 74.
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by beater » Mon Oct 13, 2008 6:37 pm
OA - D. That is exactly how I solved the problem. Anyone with a different approach? Just trying to make sure I know everything about triangles....
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by raju232007 » Tue Oct 14, 2008 3:21 am
BD=CD..given
Therefore triangle BDC is isosceles
v=u
w=180-2v.....(1)

statement 1:

v=74
z=180-v
z=180-74=106
In triangle ADB x+y=180-z=74

Sufficient

statement 2:

w=32
Substituting in 1 we get v=74

x+y=74( same approach as given above)

Sufficient

Hope this helps
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