A = (-4.6879539193588835, -1.8281639928698716)
B = (-0.7059854745805227, 5.068611246151355)
C = (3.3260706235912765, -1.8281639928698716)
poly1, b, a, c = Polygon(A, C, B)
α, β, γ = Angle(poly1)
D = Midpoint(c)
E = Midpoint(a)
F = Midpoint(b)
text1: "" + a + ""
text2: "" + c + ""
text3: "" + b + ""