等腰梯形模板 by Tim Brzezinski (2)

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Midpoint(a) → C_1
3. OrthogonalLine(C_1, a) → b
4. Segment(A, D) → c
5. OrthogonalLine(D, b) → d
6. Intersect(b, d) → E
7. Segment(D, E) → e
8. Mirror(D, b) → C_2
9. Mirror(E, b) → E'
10. Segment(C_2, E') → e'
11. Mirror(A, b) → B_2
12. Mirror(D, b) → C
13. Segment(B_2, C) → c'
14. Segment(D, C_2) → f
15. Segment(A, C_2) → g
16. Segment(D, B) → h
17. Intersect(g, h) → F
18. Segment(A, F) → i
19. Segment(F, C_2) → j
20. Segment(D, F) → k
21. Segment(F, B) → l
22. Angle(D, C_2, F) → α
23. Angle(F, C_2, B) → β
24. Angle(A, D, F) → γ
25. Angle(F, D, C_2) → δ
26. Angle(B, A, F) → ε
27. Angle(F, A, D) → ζ
28. Angle(F, B, A) → η
29. Angle(C_2, B, F) → θ
30. Angle(B, A, D) → ι
31. Angle(A, D, C_2) → κ
32. Angle(D, C_2, B) → λ
33. Angle(C_2, B, A) → μ
34. Polygon(A, B, C) → poly1, c_1, a_1, b_1
35. Mirror(A, i) → A'
36. Mirror(B, i) → B'
37. Mirror(C, i) → C'
38. Polygon(A', B', C') → poly1', c'_1, a', b'
39. Polygon(D, A, B) → poly2, b_2, d_1, a_2
40. Mirror(D, l) → D'
41. Mirror(A, l) → A'_1
42. Mirror(B, l) → B'_1
43. Polygon(D', A'_1, B'_1) → poly2', b'_1, d', a'_1