交点的几何作图

GeoGebra 命令及参数

1. Sequence((cos(t), sin(t)), t, 0, (2 * π), ((2 * π)) / 18) → list1
2. Point(list1) → A
3. Point(list1) → B
4. Segment(A, B) → a
5. Point(list1) → C
6. Point(list1) → D
7. Segment(C, D) → b
8. Point(list1) → G
9. Point(list1) → H
10. Segment(G, H) → d
11. Point(list1) → I
12. Point(list1) → J
13. Segment(I, J) → e
14. Intersect(a, b) → K
15. Point(list1) → E
16. Point(list1) → F
17. Segment(E, F) → c