特殊直角三角形：30°-60°-90°与45°-45°-90°的几何构造 by shanlee

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Rotate(B, 90*°, A) → B'
3. Angle(B, A, B') → α
4. Ray(A, B') → b
5. Dilate(B', 1.7320508, A) → C
6. Segment(C, A) → c
7. Segment(C, B) → d
8. Angle(A, C, B) → β
9. Angle(C, B, A) → γ
10. Rotate(E, 90*°, D) → F
11. Angle(E, D, F) → δ
12. Segment(E, D) → f
13. Segment(D, F) → g
14. Segment(F, E) → h
15. Angle(D, F, E) → ε
16. Angle(F, E, D) → ζ
17. Segment(C, A) → j
18. Segment(A, B) → k
19. Segment(B, C) → l
20. Segment(D, E) → m
21. Segment(E, F) → n
22. Segment(F, D) → p
23. Line(B, A) → a_1
24. Mirror(B, c) → B'_1
25. Segment(C, B'_1) → b_1
26. Segment(B'_1, A) → c_1