f: x + y - 2 = 0
Α = (-2, 1)
g: x + y = 5
h: x + y = -1
Ν = Point(g)
B = Intersect(f, yAxis)
Γ = Intersect(xAxis, f)
t1, β, γ, δ = Polygon(B, Γ, Ν)