矩形菱形正方形

GeoGebra 命令及参数

1. Segment(A, B) → f
2. OrthogonalLine(A, f) → g
3. OrthogonalLine(B, f) → h
4. Point(g) → D
5. OrthogonalLine(D, g) → i
6. Intersect(h, i) → C
7. Polygon(A, B, C, D) → poly1, a, b, d, c
8. Segment(F, G) → j
9. Circle(F, G) → e
10. Point(e) → I
11. LineBisector(G, I) → k
12. Circle(G, F) → p
13. Intersect(p, k, 2) → H
14. Polygon(G, H, I, F) → poly2, f_1, h_1, g_1, e_1
15. Polygon(L, K, 4) → poly3, l, m, n, q, N, M
16. Segment(A, C) → r
17. Segment(B, D) → s
18. Segment(F, H) → t
19. Segment(G, I) → i_1
20. Segment(M, K) → j_1
21. Segment(N, L) → k_1
22. Intersect(r, s) → E
23. Intersect(j_1, k_1) → O
24. Intersect(t, i_1) → O_1
25. Angle(B, E, A) → α
26. Angle(G, O_1, F) → β
27. Angle(L, O, K) → γ
28. Perimeter(poly1) → perimeterpoly1
29. PointIn(poly1) → Pointpoly1_1
30. Distance(A, C) → distanceAC
31. Midpoint(A, C) →
32. Perimeter(poly1) → o
33. PointIn(poly1) → Pointpoly1
34. Distance(B, D) → distanceBD
35. Midpoint(B, D) →
36. Distance(F, H) → distanceFH
37. Midpoint(F, H) →
38. Distance(G, I) → distanceGI
39. Midpoint(G, I) →
40. Perimeter(poly2) → perimeterpoly2
41. PointIn(poly2) → Pointpoly2
42. Distance(K, M) → distanceKM
43. Midpoint(K, M) →
44. Distance(L, N) → distanceLN
45. Midpoint(L, N) →