计算绿色五角星形面积

GeoGebra 命令及参数

1. Polygon(A, B, 5) → poly1, f, g, h, i, j, C, D, E
2. LineBisector(E, D) → k
3. LineBisector(D, C) → l
4. LineBisector(C, B) → m
5. LineBisector(B, A) → n
6. LineBisector(E, A) → p
7. Intersect(k, i) → F
8. Intersect(l, h) → G
9. Intersect(m, g) → H
10. LineBisector(f) → q
11. Point(f) → I
12. Intersect(k, l) → J
13. Circle(J, G) → c
14. Circle(D, G) → d
15. Intersect(c, p, 1) → K
16. Circle(E, K) → e
17. Circle(A, K) → r
18. Circle(C, H) → t
19. CircleArc(D, F, G) → c_1
20. PointIn(c_1) → Pointc1_1
21. Circle(B, H) → s
22. Length(c_1) → b
23. PointIn(c_1) → Pointc1
24. Angle(F, D, G) → aaa
25. Segment(F, D) → f_1
26. CircleArc(C, G, H) → d_1
27. CircleArc(B, H, I) → e_1
28. CircleArc(A, I, K) → g_1
29. CircleArc(E, K, F) → h_1