Venn图：集合论中的可移动字母与数字

GeoGebra 命令及参数

1. Point(yAxis) → A
2. Circle(A, 5) → Abold
3. Point(xAxis) → B
4. Circle(B, 5) → Bbold
5. Polygon(C, D, E, F) → Ubold, c_1, d_1, e, f
6. Intersect(Abold, Bbold, 1) → G
7. Intersect(Abold, Bbold, 2) → H
8. CircleArc(A, G, H) → Aarc
9. CircleArc(B, G, H) → Asarc
10. CircleArc(A, H, G) → Bsarc
11. CircleArc(B, H, G) → Barc
12. Circle(A, 5) → Ashade
13. Circle(B, 5) → Bshade
14. Polygon(C, D, E, F) → Ushade, K_2, K_3, K_4, K_5
15. Circle(A, 5) → Awhite
16. Circle(B, 5) → Bwhite
17. CircleArc(B, G, H) → Asarcwhite
18. CircleArc(A, H, G) → Bsarcwhite
19. CircleArc(A, H, G) → Bsarcx
20. CircleArc(B, G, H) → Asarcx