菱形对角线垂直定理演示

GeoGebra 命令及参数

1. Point(Circle[A, n]) → B
2. Segment(A, B) → a
3. Point(Circle[A, i]) → C
4. Segment(A, C) → b
5. Line(C, a) → c
6. Line(B, b) → d
7. Intersect(d, c) → D
8. Segment(B, D) → e
9. Segment(C, D) → f
10. Polygon(A, B, D, C) → poly1, a_1, b_1, d_1, c_1
11. Segment(A, D) → g
12. Segment(B, C) → h
13. Intersect(g, poly1) → E, F
14. Intersect(h, g) → G
15. Segment(A, G) → j
16. Segment(B, G) → k
17. Segment(G, C) → l
18. Segment(G, D) → m
19. Angle(B, G, A) → α
20. Angle(A, G, C) → β
21. Angle(C, G, D) → γ
22. Angle(D, G, B) → δ
23. Angle(A, G, B) → α_1
24. Angle(C, G, A) → β_1
25. Angle(D, G, C) → γ_1
26. Angle(B, G, D) → δ_1
27. Distance(A, B) → distanceAB
28. Distance(B, D) → distanceBD
29. Distance(D, C) → distanceDC
30. Distance(C, A) → distanceCA