单位圆探究1

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Circle(A, 1) → c
3. Point(c) → B
4. Intersect(c, xAxis, 1) → π1
5. Intersect(c, xAxis, 2) → zero
6. Segment(π1, zero) → a
7. Intersect(c, yAxis, 2) → π2
8. Intersect(c, yAxis, 1) → π3_2
9. Segment(π2, π3_2) → b
10. Point(c) → π6
11. Rotate(zero, θ, A) → D'
12. Angle(zero, A, D') → α
13. Segment(A, D') → i
14. OrthogonalLine(D', a) → j
15. OrthogonalLine(D', b) → k
16. Intersect(j, a) → Q
17. Segment(A, Q) → l
18. Segment(D', Q) → m
19. Intersect(c, i, 1) → point
20. Point(c) → π3
21. Point(c) → π4
22. Point(c) → π2_3
23. Point(c) → π3_4
24. Point(c) → π5_6
25. Point(c) → π7_6
26. Point(c) → π5_4
27. Point(c) → π4_3
28. Point(c) → π5_3
29. Point(c) → π7_4
30. Point(c) → π11_6
31. Segment(π2_3, π3) → n
32. Segment(π3_4, π4) → p
33. Segment(π5_6, π6) → q
34. Segment(π7_6, π11_6) → r
35. Segment(π5_4, π7_4) → s
36. Segment(π4_3, π5_3) → t
37. Segment(π6, π11_6) → a_1
38. Segment(π4, π7_4) → b_1
39. Segment(π3, π5_3) → c_1
40. Segment(π2_3, π4_3) → d
41. Segment(π3_4, π5_4) → e
42. Segment(π5_6, π7_6) → f