Question

the three lines x + y - 4 = 0 , 3x + y - 4 = 0 and x + 3y - 4 = 0 forms a _______ triangle?

1 - Isosceles
2 - Equilateral
3 - Right angled
4 - None

Answer 1

Answer:

equilateral triangle formed

Step-by-step explanation:

equilateral triangle is 90 degree

Answer 2

Answer:

1 - Isosceles

Step-by-step explanation:

Isosceles triangle have 2 side equal

and

this triangle also have 2 sides equal