中点构造 by JM Arranz, JA Mora, M Sada y R Losada

GeoGebra 命令及参数

1. Polygon(A, B, C, D) → poly1, a, b, c, d
2. Midpoint(d) → E
3. Midpoint(c) → F
4. Midpoint(b) → G
5. Midpoint(a) → H
6. Polygon(E, F, G, H) → poly2, e, f, g, h
7. Segment(A, C) → i
8. Midpoint(i) → I
9. Polygon(D, E, F) → poly3, f_1, d_1, e_1
10. Polygon(E, I, F) → poly4, f_2, e_2, i_1
11. Polygon(H, G, B) → poly5, b_1, h_1, g_1
12. Polygon(H, I, G) → poly6, g_2, h_2, i_2
13. Polygon(E, H, I) → poly7, i_3, e_3, h_3
14. Polygon(F, G, C) → poly8, c_1, f_3, g_3
15. Polygon(E, A, H) → poly9, h_4, e_4, a_1
16. Polygon(F, I, G) → poly10, g_4, f_4, i_4