几何区域面积计算示例

GeoGebra 命令及参数

1. Circle(A, a) → c
2. Circle(B, a) → d
3. Circle(C, a) → e
4. Circle(D, a) → f
5. Polygon(B, A, D, C) → q1, b, a_1, d_1, c_1
6. Intersect(f, a_1, 1) → E
7. Intersect(c, b, 1) → F
8. Intersect(d, c_1, 1) → G
9. Intersect(e, d_1, 1) → H
10. CircleArc(C, H, G) → g
11. CircleArc(A, F, E) → h
12. CircleArc(D, E, H) → k
13. CircleArc(B, G, F) → p
14. Point(p) → I
15. Point(h) → J
16. Point(g) → K
17. Point(k) → L
18. Point(p) → M
19. Point(h) → N
20. Point(p) → O
21. Point(h) → P
22. Point(g) → Q
23. Point(k) → R
24. Point(g) → S
25. Point(k) → T
26. Point(g) → U
27. Point(k) → V
28. Point(p) → W
29. Point(h) → Z
30. Segment(M, N) → i
31. Segment(W, Z) → j
32. Segment(I, J) → l
33. Segment(O, P) → m
34. Segment(Q, R) → n
35. Segment(K, L) → q
36. Segment(S, T) → r
37. Segment(U, V) → s
38. Segment(O, Q) → t
39. Segment(O, Q) → f_1
40. Segment(Q, O) → g_1
41. Segment(I, K) → h_1
42. Segment(W, S) → i_1
43. Segment(M, U) → j_1
44. Segment(N, V) → k_1
45. Segment(Z, T) → l_1
46. Segment(L, J) → m_1
47. Segment(P, R) → n_1
48. Segment(F, H) → p_1
49. Segment(G, E) → q_1
50. Textfield(a) → InputBox1