等腰梯形特性演示

GeoGebra 命令及参数

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