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# traingle

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30 Aug 2007, 14:21
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Traingle help
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traingle 1.doc [33.5 KiB]

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30 Aug 2007, 15:28
Ravshonbek wrote:
Traingle help

You need to look at the triangle differently.
Put vertex A on top, B and C on bottom.
Then you see that the base of triangle ABC = 3
So, using the area formula:
(1/2)*h*3 = 30
h = 20

This height happens to be the same for triangle ADC and its base is 1
Area ADC = 1/2 * 1 * 20 = 10
Re: traingle   [#permalink] 30 Aug 2007, 15:28
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