A

C

B

reta paralela a AB

igual ao ângulo B

igual ao ângulo A

A = (2.42, 2.94)
B = (-1.94, 0.34)
C = (4.12, 0.3)
polígono1, c, a, b = Polygon(A, B, C)
α = Angle(B, A, C)
β = Angle(A, C, B)
γ = Angle(C, B, A)
d = Ray(B, C)
e = Line(C, c)
D = Point(e)
E = Point(d)
δ = Angle(E, C, D)
ε = Angle(D, C, A)