多边形内角和探究

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c, a, b
2. Polygon(D, E, F, G) → poly2, d, e, f, g
3. Polygon(H, I, J, K, L) → poly3, h, i, j, k, l
4. Polygon(M, N, O, P, Q, R) → poly4, m, n, o, p, q, r
5. Polygon(S, T, U, V, W, Z, A_1) → poly5, s, t, u, v, w, z_1, a_1
6. Polygon(B_1, C_1, D_1, E_1, F_1, G_1, H_1, I_1) → poly6, b_1, c_1, d_1, e_1, f_1, g_1, h_1, i_1
7. Line(J_1, K_1) → j_1
8. Line(L_1, M_1) → k_1
9. OrthogonalLine(L_1, k_1) → l_1
10. OrthogonalLine(K_1, j_1) → n_1
11. OrthogonalLine(M_1, k_1) → p_1
12. Point(j_1) → O_1
13. Line(O_1, n_1) → q_1
14. Line(J_1, q_1) → m_1
15. Intersect(j_1, k_1) → N_1
16. Intersect(p_1, m_1) → P_1
17. Intersect(l_1, m_1) → Q_1
18. Intersect(l_1, n_1) → R_1
19. Intersect(p_1, n_1) → S_1
20. Intersect(m_1, p_1) → T_1
21. Intersect(l_1, m_1) → U_1
22. Segment(Q_1, P_1) → r_1
23. Segment(P_1, S_1) → s_1
24. Segment(S_1, R_1) → t_1
25. Segment(R_1, Q_1) → f_2
26. Segment(J_1, K_1) → g_2
27. Segment(L_1, M_1) → h_2
28. Intersect(l_1, f_2) → V_1
29. Intersect(q_1, l_1) → W_1
30. Intersect(p_1, s_1) → Z_1
31. Intersect(q_1, p_1) → A_2
32. Segment(W_1, A_2) → i_2
33. Segment(F, D) → j_2
34. Segment(H, J) → k_2
35. Segment(H, K) → l_2