500

B = (0.4879123349310969, -0.4294566335988576)
A = (2.4739287822715306, -0.4391920083407225)
C = (2.298692036917963, 2.870835403893334)
a = Segment(A, C)
b = Segment(C, B)
c = Segment(B, A)
α = Angle(A, B, C)
β = Angle(C, A, B)
khoangcachBA = Distance(B, A)