用粉红色四边形绘制小丑脸

GeoGebra 命令及参数

1. Line(D, E) → a
2. OrthogonalLine(D, a) → b
3. OrthogonalLine(E, a) → d
4. Point(d) → F
5. OrthogonalLine(F, d) → e
6. Intersect(b, e) → G
7. Polygon(E, F, G, D) → poly1, e_1, f, g, d_1
8. Polygon(H, I, 4) → poly2, h, i, j, k, J, K
9. Circle(T, U) → c_1
10. Circle(V, U) → f_1
11. Intersect(c_1, f_1, 2) → W
12. Polygon(T, U, V, W) → poly5, t_1, u, v, w
13. Circle(Z, A_1) → g_1
14. Circle(A_1, Z) → h_1
15. Point(h_1) → B_1
16. Circle(B_1, A_1) → k_1
17. Intersect(g_1, k_1, 2) → C_1
18. Polygon(Z, C_1, B_1, A_1) → poly6, z, c_2, b_1, a_1
19. LineBisector(S, R) → r
20. Mirror(D_1, r) → E_1
21. Polygon(R, S, E_1, D_1) → poly4, r_1, s, e_2, d_2
22. Line(F_1, G_1) → q
23. Line(H_1, q) → t
24. Line(F_1, H_1) → i_1
25. Line(G_1, i_1) → j_1
26. Intersect(t, j_1) → I_1
27. Polygon(F_1, G_1, I_1, H_1) → poly7, f_2, g_2, i_2, h_2
28. Polygon(J_1, P, Q, K_1) → poly8, j_2, p_1, q_1, k_2
29. Line(D_2, E_2) → a_2
30. OrthogonalLine(D_2, a_2) → b_2
31. OrthogonalLine(E_2, a_2) → d_4
32. Point(d_4) → F_2
33. OrthogonalLine(F_2, d_4) → e_4
34. Intersect(b_2, e_4) → G_2
35. Polygon(E_2, F_2, G_2, D_2) → poly1_1, e_3, f_3, g_3, d_3
36. Circle(Z_1, A_2) → g_4
37. Circle(A_2, Z_1) → h_3
38. Point(h_3) → B_2
39. Circle(B_2, A_2) → k_3
40. Intersect(g_4, k_3, 2) → C_2
41. Polygon(Z_1, C_2, B_2, A_2) → poly6_1, z_1, c_3, b_3, a_3
42. Polygon(H_2, I_2, 4) → poly2_1, h_4, i_3, j_3, k_4, J_2, K_2
43. LineBisector(S_1, R_1) → r_3
44. Mirror(D_3, r_3) → E_3
45. Polygon(R_1, S_1, E_3, D_3) → poly4_1, r_2, s_1, e_5, d_5
46. Line(F_3, G_3) → q_2
47. Line(H_3, q_2) → t_2
48. Line(F_3, H_3) → i_5
49. Line(G_3, i_5) → j_4
50. Intersect(t_2, j_4) → I_3
51. Polygon(F_3, G_3, I_3, H_3) → poly7_1, f_4, g_5, i_4, h_5
52. Circle(T_1, U_1) → c_4
53. Circle(V_1, U_1) → f_5
54. Intersect(c_4, f_5, 2) → W_1
55. Polygon(T_1, U_1, V_1, W_1) → poly5_1, t_3, u_1, v_1, w_1
56. Polygon(J_3, P_1, Q_1, K_3) → poly8_1, j_5, p_2, q_3, k_5
57. Ellipse(A, B, C) → c