α

Ha 2017

\alpha=\pi-\frac{2\pi}{n}

n = 9 (slider from 3 to 21, step 1)
B = Point(xAxis)
A = Intersect(xAxis, yAxis)
c = Circle(A, B)
C = Intersect(c, yAxis, 1)
α: 180° - (360 * ° / n)
C'_2 = Rotate(C, (-α), A)
G = Point(c)
F: C'_2
i = Segment(A, C)
ε = Angle(F, A, C)
f = Line(F, A)
D, D_n = Intersect(c, f)
Vieleck1, g, h, j, l, m, p, q, r, s, t, b, e, f_1, g_1, h_1, i_1, j_1, k_1, l_1, m_1, n_1, L, M, N, O, E, P, Q, R, S, T, U, V, W, Z, A_1, B_1, C_1, D_1, E_1 = Polygon(C, D_n, n)
Text2: "" + n + "-Eck"