矩形的性质 by Marcia cyr

GeoGebra 命令及参数

1. Segment(A, C) → a
2. OrthogonalLine(A, a) → b
3. OrthogonalLine(C, a) → c
4. Line(D, a) → d
5. Intersect(b, d) → E
6. Intersect(c, d) → F
7. Segment(E, A) → e
8. Segment(F, C) → f
9. Segment(F, E) → g
10. Angle(E, A, C) → α
11. Angle(A, C, F) → β
12. Angle(C, F, E) → γ
13. Angle(F, E, A) → δ
14. Distance(E, A) → distanceEA
15. Midpoint(E, A) →
16. Distance(A, C) → distanceAC
17. Midpoint(A, C) →
18. Distance(C, F) → distanceCF
19. Midpoint(C, F) →
20. Distance(F, E) → distanceFE
21. Midpoint(F, E) →
22. Slope(e) → m
23. Slope(f) → m_1
24. Slope(a) → m_2
25. Slope(g) → m_3
26. Segment(E, C) → l
27. Segment(F, A) → n
28. Intersect(l, n) → G
29. Distance(A, G) → distanceAG
30. Midpoint(A, G) →
31. Distance(G, F) → distanceGF
32. Midpoint(G, F) →
33. Distance(C, G) → distanceCG
34. Midpoint(C, G) →
35. Distance(G, E) → distanceGE
36. Midpoint(G, E) →
37. Angle(A, G, E) → ε