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2015-07-12T10:48:47+05:30

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LET A=x
we know that A=C ; C=x
SO B = A+C
     B = x+x
     B = 2x

we know that 
sum of angles in a triangle = 180
                           A+B+C = 180
                           x+2x+x = 180
                                  4x = 180
                                   x = 180/4
                                   x = 45

A = x = 45

B = 2x = 2(45) = 90

C = x = 45

this is right angled triangle and also isosles triangle

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