动态对称性演示

GeoGebra 命令及参数

1. Circle(A, a) → e
2. Point(e) → B
3. Circle(B, b) → f
4. Point(f) → C
5. Circle(C, c) → g
6. Circle(D, d) → h
7. Point(h) → E
8. Point(g) → F
9. Point(g) → G
10. Line(G, C) → i
11. Intersect(g, i, 2) → H
12. Rotate(G, 90°, C) → G'
13. Angle(G, C, G') → α
14. Segment(C, G') → j
15. Line(G', C) → k
16. Intersect(g, k, 2) → I
17. Segment(G, H) → l
18. Segment(G', I) → m
19. Polygon(G, G', H, I) → q1, g_1, g', h_1, ı
20. Segment(I, E) → n
21. Segment(G, E) → p
22. Segment(G', E) → q
23. Segment(H, E) → r
24. Segment(C, E) → s