平行线构造与平移变换

GeoGebra 命令及参数

1. Line(A, B) → a
2. Circle(C, Segment[C, A]) → c
3. Intersect(c, a, 2) → D
4. Circle(D, Segment[D, A]) → d
5. Circle(A, Segment[A, D]) → e
6. Intersect(d, e, 2) → E
7. Intersect(d, e, 1) → F
8. Line(C, E) → b
9. Circle(C, Segment[C, E]) → f
10. Intersect(f, b, 1) → G
11. Circle(E, Segment[G, E]) → g
12. Circle(G, Segment[G, E]) → h
13. Intersect(g, h, 2) → H
14. Intersect(g, h, 1) → I
15. Line(C, I) → i