圆柱钥匙几何模型

GeoGebra 命令及参数

1. Point(xAxis) → A
2. CircleArc(H, B, D) → e
3. Circle(zAxis, B) → d
4. Point(e) → C
5. Angle(C, H, B) → theta
6. Circle(zAxis, A) → c
7. Sequence(((r * cos((k * a) + theta)), (r * sin((k * a) + theta)), 8), k, 0, n) → list1
8. Sequence(((r * cos((k * a))), (r * sin((k * a))), 0), k, 0, n) → list2
9. Sequence(Segment[Element[list2, k], Element[list1, k]], k, 1, n + 1) → list3
10. Segment(B, H) → h
11. Segment(C, H) → i
12. Cylinder(O, H, 0.1) → b, b_2, b_3, b_4
13. Point(xAxis) → I
14. Segment(Element[list1, 1], Element[list2, 1]) → f
15. Conic(A, F, E, G, B) → g