切线与渐近线垂直性质演示

GeoGebra 命令及参数

1. Point(xAxis) → A
2. Point(xAxis) → S
3. Mirror(S, yAxis) → S'
4. Hyperbola(S', S, A) → c
5. Intersect(c, yAxis, 2) → B
6. Point(c) → P
7. Tangent(P, c) → g, b
8. Intersect(g, d) → D
9. Intersect(g, f) → D'
10. Segment(P, S) → h
11. Segment(S, D) → i
12. Angle(P, S, D) → α
13. Segment(D', P) → l
14. Segment(P, D) → m
15. Segment(P, S') → j
16. Segment(D', S') → k
17. Angle(P, S', D') → β