斜锥曲线（带标注）

GeoGebra 命令及参数

1. Intersect(zAxis, a) → K
2. Plane(K, yAxis) → i
3. Intersect(zAxis, xOyPlane) → O
4. Cone(K, O, 5) → f, botcirc, h
5. Intersect(i, botcirc) → B, C
6. Angle(B, O, C) → α
7. ConeInfinite(O, zAxis, α / 2) → c
8. Line(O, B) → j
9. Intersect(k, j) → A
10. OrthogonalPlane(A, j) → cutplane
11. IntersectPath(d, c) → topcirc
12. Intersect(j, topcirc) → C2,
13. IntersectPath(cutplane, c) → hyperb2
14. IntersectPath(cutplane, f) → hyperb1
15. Line(O, C) → l
16. Intersect(l, topcirc) → B2,
17. Intersect(l, hyperb1) → A',
18. Intersect(cutplane, topcirc) → T2, S2
19. Intersect(cutplane, botcirc) → S, P
20. Angle(A', O, C2) → β
21. Midpoint(S, P) → N
22. Angle(O, A, N) → γ
23. Midpoint(S2, T2) → G2
24. Line(A, A') → axis
25. Segment(N, P) → m
26. Segment(B, C) → q
27. Segment(B, P) → r
28. Segment(P, C) → s
29. IntersectPath(k, c) → p
30. Intersect(l, p) → D,
31. Intersect(zAxis, axis) → L
32. Segment(D, A) → e
33. OrthogonalLine(D, e, x + 0z = 0) → g
34. OrthogonalLine(C, q, x + 0z = 0) → n
35. Intersect(g, axis) → F
36. Intersect(n, axis) → G