c)

N = (21.347620819193914, 9.833815347008757)
M = (16.41743018691175, 4.8644962176449855)
đa giác3, j_1, k_1, p, q, Q, P = Polygon(N, M, 4.0)
N_1 = Midpoint(M, P)
r = Segment(N, N_1)
s = Segment(N_1, Q)
t = Segment(N_1, P)
a_1 = Segment(N_1, M)
γ = Angle(P, N_1, N)