集合运算在韦恩图中的应用

GeoGebra 命令及参数

1. Point(xAxis) → C
2. Circle(C, A) → c
3. Point(xAxis) → D
4. Circle(D, B) → d
5. Intersect(c, d, 2) → E
6. Intersect(c, d, 1) → F
7. CircleArc(C, E, F) → c2
8. CircleArc(D, F, E) → c3
9. CircleArc(C, F, E) → c4
10. CircleArc(D, E, F) → c1
11. Point(l1) → G
12. Locus(G1, G) → loc1
13. Point(l2) → H
14. Point(l3) → I
15. Locus(I1, I) → loc3
16. Midpoint(J, L) → N
17. Midpoint(K, M) → O
18. Segment(E, N) → f
19. Segment(N, L) → g
20. Point(g) → P
21. Segment(P, M) → h
22. Point(h) → Q
23. Segment(Q, O) → i
24. Segment(O, F) → j
25. Segment(J, N) → k
26. Segment(J, K) → l
27. Segment(K, O) → m
28. Point(l5) → R
29. Locus(R1, R) → loc4
30. Point(l6) → S
31. Locus(S1, S) → loc5
32. Locus(H1, H) → loc2