正方形挑战问题

GeoGebra 命令及参数

1. Polygon(A, D, 4) → poly1, a_1, b_1, c, d, C, B
2. Segment(B, C) → e
3. Point(e) → E
4. Rotate(E, -45°, A) → E'
5. Angle(E', A, E) → α
6. Ray(A, E') → f
7. Segment(C, D) → g
8. Intersect(f, g) → F
9. Segment(B, E) → a
10. Segment(E, C) → i
11. Segment(A, E) → j
12. Segment(A, F) → k
13. Segment(B, A) → l
14. Segment(A, D) → m
15. Angle(A, B, C) → β
16. Angle(B, C, D) → γ
17. Angle(C, D, A) → δ
18. Segment(E, F) → n
19. Segment(C, F) → p
20. Segment(F, D) → b
21. Angle(B, E, F) → ε
22. Rotate(B, If[0 < o ≤ 1, (o * ε), ε], E) → D'
23. Rotate(E, If[0 < o ≤ 1, (o * ε), ε], E) → E'_1
24. Segment(D', E'_1) → a'
25. Rotate(F, If[1 < o ≤ 2, ((-(o - 1)) * ε), (-ε)], F) → F'
26. Rotate(D, If[1 < o ≤ 2, ((-(o - 1)) * ε), (-ε)], F) → B'
27. Angle(E, F, D) → ζ
28. Rotate(F, If[1 < o ≤ 2, ((-(o - 1)) * ζ), (-ζ)], F) → F'_1
29. Rotate(D, If[1 < o ≤ 2, ((-(o - 1)) * ζ), (-ζ)], F) → B'_1
30. Segment(F'_1, B'_1) → q'