四面体定义的四圆球体

GeoGebra 命令及参数

1. Polygon(B, C, D) → t1, d, b, c
2. Polygon(B, A, C) → t2, c_1, b_1, a
3. Polygon(D, A, B) → t3, b_2, d_1, a_1
4. Midpoint(A, C) → E
5. Midpoint(C, D) → F
6. Midpoint(D, A) → G
7. Midpoint(A, B) → H
8. Midpoint(B, C) → I
9. Midpoint(D, B) → J
10. OrthogonalPlane(H, d_1) → e
11. OrthogonalPlane(J, a_1) → f
12. OrthogonalPlane(G, b_2) → g
13. OrthogonalPlane(E, b_1) → h
14. OrthogonalPlane(F, b) → i
15. OrthogonalPlane(I, a) → j
16. IntersectPath(g, e) → k
17. IntersectPath(i, j) → l
18. IntersectPath(i, h) → n
19. IntersectPath(h, j) → m
20. Intersect(l, m) → K
21. Sphere(K, D) → o
22. Circle(k, A) → p
23. Circle(l, C) → q
24. Circle(n, D) → r
25. Circle(m, A) → s