The straight lines x + y = 0, 3x + y-4 = 0, and x + 3y - 4 = 0 form a triangle which is
The correct option is A isosceles
Solving the given equation of lines pairwise, we get the vertices of triangle as A(−2,2), B(2,−2), C(1,1). Then,
Hence, the triangle is isosceles.