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The straight lines 3x+y-4=0,x+3y-4=0 and...

The straight lines `3x+y-4=0,x+3y-4=0` and `x+y=0` form a triangle which is : a) isosceles b) right-angled c) equilateral d) scalene

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CENGAGE PUBLICATION-STRAIGHT LINES-All Questions
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