平面旋转

GeoGebra 命令及参数

1. Polygon(A, B, C) → t1, c, a, b
2. Textfield(d) → InputBox1
3. Textfield(e) → InputBox2
4. Rotate(A, α, D) → A'
5. Rotate(B, α, D) → B'
6. Rotate(C, α, D) → C'
7. Polygon(A', B', C') → t1', c', a', b'
8. Distance(D, A') → DA'
9. Distance(D, A) → f
10. Circle(D, f) → g
11. Distance(D, B') → DB'
12. Distance(D, B) → h
13. Distance(D, C) → DC
14. Circle(D, h) → k
15. Circle(D, i) → p
16. Segment(D, A) → l
17. Rotate(Distance[D, A], α) → m
18. Rotate(Distance[D, A], α) → n
19. Rotate(D, α, D) → D'
20. Rotate(A, α, D) → A'_{1}
21. Segment(D', A'_{1}) → l'
22. Angle(l, l') → β
23. Textfield(q) → InputBox3
24. Textfield(r) → InputBox4
25. Textfield(s) → InputBox5
26. Textfield(t) → InputBox6
27. Textfield(u) → InputBox7
28. Textfield(v) → InputBox8