最佳拟合直线

GeoGebra 命令及参数

1. OrthogonalLine(A, f) → g
2. OrthogonalLine(B, f) → h
3. OrthogonalLine(C, f) → i
4. OrthogonalLine(D, f) → j
5. OrthogonalLine(E, f) → k
6. OrthogonalLine(F, f) → l
7. Intersect(f, g) → A_1
8. Intersect(f, i) → C_1
9. Intersect(f, h) → B_1
10. Intersect(f, j) → D_1
11. Intersect(f, k) → E_1
12. Intersect(f, l) → F_1
13. Polygon(A_1, A, 4) → poly1, m_2, n, p, q, G, H
14. Polygon(B_1, B, 4) → poly2, r, s, t, a_2, I, J
15. Polygon(C_1, C, 4) → poly3, b_2, c, d, e, K, L
16. Polygon(D, D_1, 4) → poly4, f_1, g_1, h_1, i_1, M, N
17. Polygon(E_1, E, 4) → poly5, j_1, k_1, l_1, m_1, O, P
18. Polygon(F, F_1, 4) → poly6, n_1, p_1, q_1, r_1, Q, R
19. Segment(A, A_1) → s_1
20. Segment(B_1, B) → t_1
21. Segment(C_1, C) → a_1
22. Segment(D, D_1) → b_1
23. Segment(E_1, E) → c_1
24. Segment(F, F_1) → d_1
25. FitLineY({A, B, C, D, E, F}) → a