阴影区域的面积

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(xAxis) → B
3. Point(yAxis) → C
4. Segment(C, D) → f
5. Segment(D, B) → g
6. Segment(B, A) → h
7. Segment(A, C) → i
8. Semicircle(C, A) → c
9. Semicircle(D, C) → d
10. CircleArc(A, B, C) → e
11. Intersect(c, d, 2) → E
12. Intersect(d, e, 1) → F
13. CircleArc(A, F, C) → k
14. Midpoint(i) → G
15. CircleArc(G, E, C) → p
16. Midpoint(C, D) → H
17. CircleArc(H, E, F) → q
18. Point({k, p, q}) → I
19. Locus(I', I) → loc1