Consider a triangle Δ whose two sides lie on the x-axis and the line x + y + 1 = 0. If the orthocentre of Δ is (1, 1), t…

Consider a triangle Δ whose two sides lie on the x-axis and the line x + y + 1 = 0. If the orthocentre of Δ is (1, 1), then the equation of the circle passing through the vertices of the triangle Δ is