φ = 1.4311699866353502 rad (slider from 0 to 3.141592653589793, step 0.017453292519943295)
O = (2.7431999999999994, -2.1230000000000007)
M = (8.9384, -2.0988000000000007)
N = (10.7776, 0.030799999999999505)
a = Segment(M, N)
b = Segment(O, M)
c = Segment(N, O)
O'_1 = Rotate(O, φ, O)
M' = Rotate(M, φ, O)
b' = Segment(O'_1, M')
N' = Rotate(N, φ, O)
O' = Rotate(O, φ, O)
c' = Segment(N', O')
α = Angle(N, O, N')
β = Angle(M, O, M')
d = Segment(M', N')