出租车距离下的抛物线

GeoGebra 命令及参数

1. Line(B, C) → l
2. TaxicabCirclewithCenterthroughPoint(A, D) → E, F, G, H, c, d, e, f
3. TaxicabDistance(A, D) → h
4. Point(l) → I
5. TaxicabCirclewithCenterandRadius(I, h) → j, k, l_1, m_1, J, K, L, M
6. Line(L, l) → m
7. Intersect(m, c) → N
8. Intersect(m, e) → O
9. Intersect(m, f) → P
10. Intersect(m, d) → Q
11. TaxicabCirclewithCenterandRadius(A_2, t) → a_1, b_1, c_1, d_1, S, T, U, V
12. Line(W, Z) → l_2
13. Point(l_2) → A_1
14. TaxicabCirclewithCenterandRadius(A_1, t) → f_1, g_1, h_1, i_1, B_1, C_1, D_1, E_1
15. Line(D_1, l_2) → m_2
16. Intersect(m_2, d_1) → F_1
17. Intersect(m_2, a_1) → G_1
18. Intersect(m_2, c_1) → H_1
19. Intersect(m_2, b_1) → I_1
20. Locus(G_1, t) → loc1
21. Locus(H_1, t) → loc2
22. Locus(F_1, t) → loc3
23. Locus(I_1, t) → loc4