Author- Shriranjani, IT FOR CHANGE, Bengaluru
License- CC BY SA 4.0

A = (3.18, 4.36)
B = (1.14, 0.44)
a = Segment(A, B)
D = (9.86, 0.38)
b = Segment(B, D)
C = Point(b)
c = Segment(A, C)
α = Angle(B, A, C)
β = Angle(C, B, A)
γ = Angle(D, C, A)
text1: "Exterior Angle = ∠ACD=∠ABC+∠BAC
                                   =" + β + "+" + α + "=" + γ + ""