圆柱侧面展开图及尺寸变化

GeoGebra 命令及参数

1. Point(xAxis) → A
2. Circle(A, radius) → c
3. Segment(B, C) → a
4. Circle(E, radius) → d
5. Segment(C, E) → b
6. Segment(E, D) → e
7. Segment(D, B) → f
8. Intersect(d, b, 1) → F
9. Circle(F, radius) → g
10. OrthogonalLine(F, b) → h
11. Intersect(g, h, 2) → G
12. Circle(G, radius) → k
13. Intersect(c, xAxis, 2) → H
14. Circle(H, radius) → p
15. Intersect(p, f, 1) → I
16. Point(yAxis) → J
17. Circle(J, radius) → q
18. Circle(K, radius) → r
19. Point(r) → L
20. Point(q) → M
21. Segment(L, M) → i
22. Line(K, L) → j
23. Line(J, M) → l
24. Intersect(r, j, 2) → N
25. Intersect(q, l, 2) → O
26. Segment(N, O) → m
27. Segment(I, H) → n
28. Segment(G, F) → t