扇形转化为圆锥的几何作图示例

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(xAxis) → B
3. Circle(A, B) → c
4. Intersect(c, yAxis, 1) → C
5. Intersect(c, yAxis, 2) → D
6. Semicircle(D, C) → d
7. Point(d) → E
8. Mirror(E, yAxis) → E'
9. CircleSector(A, E', E) → e
10. CircleArc(A, E, E') → f
11. CircleArc(A, E', E) → g
12. Segment(A, E') → h
13. Segment(A, E) → i
14. Angle(E', A, E) → α
15. CurveCartesian(x(H) + (rr * cos(t)), y(H) + ((rr * sin(θ)) * sin(t)), t, 0, (2 * π)) → a
16. Point(a) → M
17. Mirror(M, Line[K, L]) → M'
18. Circle(zAxis, (rr, 0, 0)) → k
19. Point(k) → J
20. Sphere(J, 10) → b
21. Intersect(j, b, 2) → N
22. Cone(N, I, rr) → m, p, l
23. Segment(I, N) → q
24. Point(p) → O
25. Segment(N, O) → r
26. Angle(O, N, I) → β
27. Segment(O, I) → s
28. Circle(zAxis, (0, 0, 10)) → t
29. Circle((0, 0, 0), (10, 0, 0), space) → c_1