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the straight lines x+y=0, 3x+y-4=0 and x+3y-4=0 which is isosless equilateral right angle none

the straight lines x+y=0, 3x+y-4=0 and x+3y-4=0 which is
  1. isosless
  2. equilateral
  3. right angle
  4. none

Grade:11

1 Answers

Sunil Raikwar
askIITians Faculty 45 Points
6 years ago
Since none of the lines are perpendicular therefore it is not a right angled triangle.
now find the intersection points of x+y=0, 3x+y-4=0, x+3y-4=0, we get
(2,-2),(-2,2) & (1,1)
let A(2,-2) B(-2,2), C(1,1)
By distance formula we get AC=AB but not equal to AB therefore it is a isoscels triangle.

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