圆锥展开图：几何与函数可视化

GeoGebra 命令及参数

1. Circle(A, B) → c
2. Rotate(C, α / 2, A) → C'
3. Rotate(C, (-(α / 2)), A) → C'_1
4. Segment(C'_1, A) → f
5. Segment(A, C') → g
6. CircleArc(A, C', C'_1) → d
7. OrthogonalLine(D, xOyPlane) → h
8. CircleSector(A, C', C'_1) → p
9. Distance(E, D) → distanceED
10. Cone(D, E, sqrt(radius^(2) - a^(2))) → k, k_2, k_3
11. Circle(D, sqrt(radius^(2) - a^(2)), xOyPlane) → e