参数环面

GeoGebra 命令及参数

1. Segment(A, ((2 * π), y(A))) → a
2. Point(a) → B
3. Segment(A, (x(A), (2 * π))) → b
4. Point(b) → C
5. Polygon(A, B, D, C) → poly1, a_1, c, f, e
6. Surface(((5 + (2 * cos(u))) * cos(t)), ((5 + (2 * cos(u))) * sin(t)), (2 * sin(u)), u, x(A), x(B), t, y(A), y(C)) → d
7. Segment(A, B) → g
8. Segment(A, C) → h
9. CurveCartesian(((5 + (2 * cos(u))) * cos(y(A))), ((5 + (2 * cos(u))) * sin(y(A))), (2 * sin(u)), u, x(A), x(B)) → i
10. CurveCartesian(((5 + (2 * cos(x(A)))) * cos(t)), ((5 + (2 * cos(x(A)))) * sin(t)), (2 * sin(x(A))), t, y(A), y(C)) → j
11. Segment(C, D) → k
12. Segment(D, B) → l
13. CurveCartesian(((5 + (2 * cos(u))) * cos(y(C))), ((5 + (2 * cos(u))) * sin(y(C))), (2 * sin(u)), u, x(A), x(B)) → m
14. CurveCartesian(((5 + (2 * cos(x(B)))) * cos(t)), ((5 + (2 * cos(x(B)))) * sin(t)), (2 * sin(x(B))), t, y(A), y(C)) → n
15. Intersect(p, g) → F
16. Intersect(p, k) → G
17. Segment(F, G) → q
18. Segment(G, F) → r
19. CurveCartesian(((5 + (2 * cos(x(H)))) * cos(t)), ((5 + (2 * cos(x(H)))) * sin(t)), (2 * sin(x(H))), t, y(A), y(C)) → u
20. CurveCartesian(((5 + (2 * cos(u))) * cos(y(H))), ((5 + (2 * cos(u))) * sin(y(H))), (2 * sin(u)), u, x(A), x(B)) → v
21. Intersect(b_1, k) → J
22. Intersect(b_1, g) → K
23. Segment(J, K) → c_1
24. Intersect(d_1, h) → L
25. Intersect(d_1, l) → M
26. Segment(L, M) → e_1
27. CurveCartesian(((5 + (2 * cos(x(F)))) * cos(t)), ((5 + (2 * cos(x(F)))) * sin(t)), (2 * sin(x(F))), t, y(A), y(C)) → o
28. Sequence(CurveCartesian[((5 + (2 * cos(u))) * cos(t)), ((5 + (2 * cos(u))) * sin(t)), (2 * sin(u)), u, x(A), x(B)], t, y(A), y(C), 0.2617993877991494) → list1
29. Sequence(CurveCartesian[((5 + (2 * cos(u))) * cos(t)), ((5 + (2 * cos(u))) * sin(t)), (2 * sin(u)), t, y(A), y(C)], u, x(A), x(B), 0.2618) → list2
30. Sequence(Segment[(u, y(A)), (u, y(C))], u, x(A), x(B), 0.2617993877991494) → list3
31. Sequence(Segment[(x(A), v), (x(B), v)], v, y(A), y(C), 0.2618) → list4