韦恩图重叠部分演示

GeoGebra 命令及参数

1. Circle(A, 2) → c
2. Circle(B, 2) → d
3. Circle(A, 2) → e
4. Circle(B, 2) → f
5. Intersect(c, d) → C, D, ,
6. Intersect(e, f) → E, F, ,
7. CircleArc(A, F, E) → g
8. CircleArc(B, E, F) → h
9. Circle(A, 2) → k
10. Circle(B, 2) → p
11. CircleArc(A, F, E) → q
12. CircleArc(B, E, F) → r
13. Point(yAxis) → G
14. Intersect(xAxis, yAxis) → H
15. Point(xAxis) → I
16. Polygon(G, H, I, J) → q1, g_1, h_1, i, j
17. Polygon(G, H, I, J) → q2, g_2, h_2, i_1, j_1
18. Textfield(u) → InputBox1
19. Textfield(ao) → InputBox2
20. Textfield(bo) → InputBox3
21. Textfield(intersection) → InputBox4
22. Textfield(u') → InputBox5