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# Would you know the formula for an Isosceles triangle

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Director
Joined: 27 Jun 2008
Posts: 525
WE 1: Investment Banking - 6yrs
Would you know the formula for an Isosceles triangle [#permalink]

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28 Oct 2008, 00:59
Would you know the formula for an Isosceles triangle (non-right angle)?
I've never seen any formula or may be I've never come across it.

Right angle Isosceles triangle - not the formula but you can use a:a:a rt2 (45-45-90) or a:a rt3:2a (30-60-90)

Thanks,
Pawan

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VP
Joined: 30 Jun 2008
Posts: 1018

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28 Oct 2008, 01:12
pawan203 wrote:
Would you know the formula for an Isosceles triangle (non-right angle)?
I've never seen any formula or may be I've never come across it.

Right angle Isosceles triangle - not the formula but you can use a:a:a rt2 (45-45-90) or a:a rt3:2a (30-60-90)

Thanks,
Pawan

length of the two equal sides = a
length of third, unequal side = c

area = (c/4) * SQRT(4a²-c²)

--== Message from GMAT Club Team ==--

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If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

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Re: isosceles traingle formula?   [#permalink] 28 Oct 2008, 01:12
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# Would you know the formula for an Isosceles triangle

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