幻想式渐开线图

GeoGebra 命令及参数

1. Circle(A, R) → c
2. Point(c) → B
3. Circle(B, r1) → d
4. Segment(B, A) → a
5. Intersect(d, a, 1) → C
6. Circle(C, r1) → e
7. Point(c) → D
8. Angle(D, A, B) → alpha
9. Rotate(B, (s1' * alpha), C) → B'
10. Angle(B, C, B') → α
11. Locus(B', B) → lugar1
12. Segment(C, B') → b
13. Circle(B', r2) → f
14. Intersect(f, b, 1) → E
15. Circle(E, r2) → g
16. Rotate(B', ((s2' * s1') * alpha), E) → B''
17. Angle(B', E, B'') → β
18. Locus(B'', B) → lugar2
19. Segment(E, B'') → h
20. Circle(B'', r3) → k
21. Intersect(k, h, 1) → F
22. Circle(F, r3) → p
23. Rotate(B'', (((s3' * s2') * s1') * alpha), F) → B'''
24. Angle(B'', F, B''') → γ
25. Locus(B''', B) → lugar3
26. Circle(E, B') → q