双曲线与法线交点作图

GeoGebra 命令及参数

1. Polygon(A, B, C) → t1, c_{3}, a_{3}, b_{3}
2. Circle(B, a) → d
3. Circle(C, a) → e
4. Intersect(d, e, 2) → D
5. Polygon(B, D, C) → t2, c_1, b_1, d_1
6. Circle(C, b) → f
7. Circle(A, b) → g
8. Intersect(f, g, 2) → E
9. Polygon(C, E, A) → t3, a_1, c_2, e_1
10. Circle(B, c) → h
11. Circle(A, c) → k
12. Intersect(h, k, 1) → F
13. Polygon(A, F, B) → t4, b_2, a_2, f_1
14. Midpoint(C, B) → G
15. Midpoint(C, A) → H
16. Midpoint(A, B) → I
17. Segment(E, D) → i
18. Segment(E, F) → j
19. Segment(D, F) → l
20. OrthogonalLine(I, i) → m
21. OrthogonalLine(H, l) → n
22. OrthogonalLine(G, j) → p
23. Intersect(m, n) → J