矩形特性

GeoGebra 命令及参数

1. Segment(A, B) → f
2. OrthogonalLine(A, f) → g
3. OrthogonalLine(B, f) → h
4. Point(g) → C
5. Line(C, f) → i
6. Intersect(h, i) → D
7. Segment(C, A) → j
8. Segment(C, D) → k
9. Segment(D, B) → l
10. Angle(B, A, C) → α
11. Angle(C, D, B) → β
12. Angle(D, B, A) → γ
13. Angle(A, C, D) → δ
14. Segment(E, F) → m
15. OrthogonalLine(E, m) → n
16. Point(n) → G
17. OrthogonalLine(G, n) → p
18. Segment(G, E) → q
19. OrthogonalLine(F, p) → r
20. Intersect(p, r) → H
21. Segment(G, E) → s
22. Segment(F, H) → t
23. Segment(H, G) → a
24. Segment(G, F) → b
25. Segment(H, E) → c
26. Intersect(b, c) → I
27. Angle(E, I, F) → ε
28. Angle(I, E, F) → ζ
29. Angle(E, F, G) → η
30. Angle(G, F, H) → θ
31. Angle(F, H, I) → ι
32. Angle(I, H, G) → κ
33. Angle(H, G, F) → λ
34. Angle(F, G, E) → μ
35. Angle(G, E, H) → ν
36. Segment(F, I) → d
37. Segment(I, H) → e
38. Segment(I, G) → f_1
39. Segment(I, E) → g_1