二十面体锥体

GeoGebra 命令及参数

1. Point(xAxis) → A
2. Rotate(A, (2 * π / 3)) → A'
3. Point(Circle[Midpoint[A, A'], (Distance[A, A'] * sqrt(3) / 2), Segment[A, A']]) → B
4. Icosahedron(A, A', B) → a, C, faceAA'B, faceABE, faceAEF, faceACF, faceAA'C, faceA'CG, faceA'DG, faceA'BD, faceBDH, faceBEH, D, faceDGJ, faceDHJ, faceHJK, faceEHK, faceGIJ, faceIJK, faceFIK, faceEFK, faceCGI, faceCFI, E, edgeAB, edgeAA', edgeA'B, edgeAE, edgeBE, edgeAF, edgeEF, edgeAC, edgeCF, edgeA'C, F, edgeA'G, edgeCG, edgeA'D, edgeDG, edgeBD, edgeBH, edgeDH, edgeEH, edgeDJ, edgeGJ, G, edgeHJ, edgeHK, edgeJK, edgeEK, edgeIJ, edgeGI, edgeIK, edgeFK, edgeFI, edgeCI, H, I, J, K
5. Circle(K, E, I) → c
6. Circle(K, E, J) → d
7. Circle(K, F, J) → e
8. Circle(K, F, H) → f
9. Circle(K, I, H) → g
10. Circle(F, I, E) → h
11. Circle(F, E, C) → k
12. Circle(F, I, A) → p
13. Circle(J, I, C) → q
14. Circle(G, C, A) → r
15. Circle(G, J, A') → s
16. Circle(H, D, A') → t
17. Cone(k, 3) → a_1, a_2, a_3
18. Cone(c, 3) → b, b_2, b_3
19. Cone(p, -3) → h_1, h_2, h_3
20. Cone(d, -3) → j, j_5, j_6
21. Cone(q, 3) → j_1, j_2, j_3
22. Cone(e, 3) → l, l_4, l_6
23. Cone(r, 3) → l_1, l_2, l_3
24. Cone(f, -3) → n, n_4, n_6
25. Cone(s, -3) → n_1, n_2, n_3
26. Cone(g, 3) → o, o_2, o_3
27. Cone(t, 3) → r_1, r_2, r_3
28. Cone(h, 3) → v, v_2, v_3