正十二边形面积问题

GeoGebra 命令及参数

1. Polygon(A, B, 12) → poly1, f, p, q, r, C, D, E, F, G, H, I, g, J, K, L, h, i, j, k, l, m, n
2. Polygon(G, A, D) → poly2, d, g_1, a
3. Polygon(A, H, I, J, K, L) → poly3, a_1, h_1, i_1, j_1, k_1, l_1
4. Segment(H, G) → s
5. Segment(G, F) → t
6. Segment(F, E) → b
7. Segment(E, D) → c
8. Segment(D, C) → e
9. Segment(C, B) → f_1
10. Segment(B, A) → m_1
11. Segment(H, I) → n_1
12. Segment(I, J) → p_1
13. Segment(J, K) → q_1
14. Segment(K, L) → r_1
15. Segment(L, A) → s_1