用多边形与圆构造并叠加几何变换的任务图（Task 3）

GeoGebra 命令及参数

1. Polygon(A, B, 3) → poly1, a, b, c, C
2. Dilate(A, If[0 < d ≤ 1, 1 - d, 0], B) → A'
3. Segment(A, A') → e
4. Dilate(B, If[1 < d ≤ 2, 2 - d, 0], C) → B'
5. Segment(B, B') → f
6. Dilate(C, If[2 < d ≤ 3, 3 - d, 0], A) → C'
7. Segment(C, C') → g
8. Segment(A, B) → h
9. Segment(A, C) → i
10. Segment(B, C) → j
11. Circle(A, (0.15 * h)) → k
12. Intersect(k, i, 1) → D
13. Intersect(k, h, 1) → E
14. CircleSector(A, E, D) → p
15. Rotate(A, If[3.5 < d ≤ 4.5, ((d - 3.5) * pi / 3), 1.0471975511965976], A) → A'_1
16. Rotate(A', If[3.5 < d ≤ 4.5, ((d - 3.5) * pi / 3), 1.0471975511965976], A) → A''
17. Segment(A'_1, A'') → e'
18. Rotate(A, If[4.5 < d ≤ 5.5, ((-(d - 4.5)) * pi / 3), -1.0471975511965976], B) → A'_2
19. Rotate(A', If[4.5 < d ≤ 5.5, ((-(d - 4.5)) * pi / 3), -1.0471975511965976], B) → A''_1
20. Segment(A'_2, A''_1) → e'_1
21. Dilate(A, If[6 < d ≤ 7, 7 - d, 0], B) → A'_3
22. Vector(A, A'_3) → u
23. Translate(p, u) → p'
24. CircleArc(A, E, D) → q
25. Rotate(p', If[7 < d ≤ 8, (((d - 7) * 2) * pi / 3), 2.0943951023931953], B) → p''
26. Circle(B, (0.15 * h)) → r
27. Intersect(f, e'_1) → G
28. Intersect(f, e'_1) → H
29. Intersect(f, e'_1) → I
30. Intersect(f, e'_1) → J
31. Intersect(r, j, 1) → F
32. Intersect(r, h, 1) → K
33. CircleArc(B, F, K) → s
34. Dilate(B, If[8 < d ≤ 9, 9 - d, 0], C) → B'_1
35. Vector(B, B'_1) → v
36. Translate(p'', v) → p'''
37. Rotate(p''', If[9 < d ≤ 10, (((d - 9) * 2) * pi / 3), 2.0943951023931953], C) → t