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2014-06-07T15:04:17+05:30

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Find the distance between the points and if two sides are of same length then it is an isosceles triangle
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2014-06-08T22:59:14+05:30
Let us consider the points as A(1,3) ; B(-3,-5) : C(-3,0)
The distance b/w AB = √(-3-1)²+(-5-3)² = √16+64 = √80
The distance b/w BC = √(-3+3)²+(0+5)² = 5 
The distance b/w CA = √(-3-1)²+(0-3)² = √16+9 = 5 
As the two sides are equal BC = CA .
We can say the given points forms an isosceles triangle.
Hence proved.
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