椭圆的生成

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → E
2. Point(xAxis) → A
3. Distance(A, (0, 0)) → c
4. Point(zAxis) → C
5. Point(yAxis) → B
6. Mirror(A, yAxis) → A'
7. Ellipse(A, A', B) → d
8. Angle(C, B, (0, 0)) → α
9. Surface(((a * s) * cos(t)), ((b * s) * sin(t)), (z(C) * s) + z(C), s, -1, 0, t, (-π), γ - π) → h
10. Vector((0, 0), C) → u
11. Segment(C, F) → f
12. Polygon(C, E, F) → Polígon1, f_1, c_1, e
13. Intersect(d, xAxis) → D, G
14. Polygon(C, E, G) → Polígon2, g, c_2, e_1
15. Angle(G, E, F, xOyPlane) → β