圆柱体展开图 by Math Team - EnergyTech (2)

GeoGebra 命令及参数

1. Line(A, B) → a
2. Line(A, C) → b
3. Point(b) → D
4. Ellipse(A, D, E) → c
5. Point(a) → F
6. Vector(A, F) → u
7. Translate(c, u) → c'
8. Line(F, b) → d
9. Intersect(c', d, 1) → G
10. Intersect(c, b, 1) → H
11. Intersect(c', d, 2) → I
12. Intersect(c, b, 2) → J
13. Segment(H, G) → e
14. Segment(I, J) → f
15. PointIn(c') → Pointc'
16. Intersect(c, e, 1) → K
17. Segment(K, D) → h
18. Midpoint(h) → L
19. Point(c) → M
20. Intersect(c, e, 1) → P
21. Intersect(c, f, 1) → N
22. Segment(P, N) → i
23. Midpoint(i) → O
24. Vector(O, P) → v
25. Circumference(c) → circumferencec
26. PointIn(c) → Pointc_1
27. PointIn(c) → Pointc
28. Segment(O, P) → k