矩形的性质

GeoGebra 命令及参数

1. Line(A, B) → a
2. OrthogonalLine(A, a) → b
3. OrthogonalLine(B, a) → c
4. Point(b) → C
5. Line(C, a) → d
6. Intersect(c, d) → D
7. Polygon(A, B, D, C) → poly1, a_1, b_1, d_1, c_1
8. Segment(A, D) → AD
9. Segment(C, B) → CB
10. Segment(A, D) → f
11. Segment(C, B) → g
12. Intersect(f, g) → E
13. Segment(E, A) → EA
14. Segment(E, C) → EC
15. Segment(E, D) → ED
16. Segment(E, B) → EB
17. Angle(poly1) → α, β, γ, δ
18. Segment(A, D) → j
19. Segment(C, B) → k
20. Angle(k, j) → ε
21. Segment(C, D) → CD
22. Segment(D, B) → DB
23. Segment(B, A) → BA
24. Segment(A, C) → AC
25. Segment(A, D) → n
26. Segment(C, B) → p
27. Angle(B, A, D) → ζ
28. Angle(D, A, C) → η
29. Angle(A, C, B) → θ
30. Angle(B, C, D) → ι
31. Angle(C, D, A) → κ
32. Angle(A, D, B) → λ
33. Angle(D, B, C) → μ
34. Angle(C, B, A) → ν
35. Line(C, A) → q
36. Line(A, B) → r
37. Line(B, D) → s
38. Line(D, C) → t
39. Polygon(F, G, H, I) → poly2, f_1, g_1, h_1, i_1