无理数在数轴上的位置

GeoGebra 命令及参数

1. Point(xAxis) → O
2. Point(xAxis) → A
3. OrthogonalLine(A, xAxis) → f
4. Circle(A, Distance[O, A]) → c
5. Intersect(c, f, 2) → B
6. Segment(O, B) → g
7. Point(c) → C
8. Point(c) → D_1
9. CircleArc(A, C, D_1) → d
10. Circle(O, Distance[O, B]) → e
11. Point(e) → E
12. Point(e) → F
13. CircleArc(O, E, F) → h
14. Intersect(h, xAxis, 1) → P
15. OrthogonalLine(B, g) → i
16. Circle(B, Distance[B, D_1]) → k
17. Intersect(k, i, 2) → D_2
18. Point(k) → G
19. Point(k) → H
20. Segment(O, D_2) → j
21. Circle(O, Distance[O, D_2]) → q
22. Point(q) → I
23. Point(q) → J
24. CircleArc(O, I, J) → r
25. Intersect(r, xAxis, 1) → K
26. Segment(O, A) → l
27. CircleArc(B, L, M) → c_1
28. Intersect(c_1, i, 1) → D_3
29. Intersect(c_1, i, 1) → D