回归线与平方和

GeoGebra 命令及参数

1. Point(f) → A1
2. Segment(A, A1) → a
3. Point(f) → B1
4. Segment(B, B1) → b
5. Point(f) → C1
6. Segment(C, C1) → c
7. Point(f) → D1
8. Segment(D, D1) → d
9. Point(Circle[C1, abs(c)]) → C2
10. Segment(C1, C2) → e
11. Point(Circle[C, abs(c)]) → C3
12. Segment(C3, C2) → h
13. Polygon(C, C1, C2, C3) → polyc, c_1, c1, c2, c3
14. Point(Circle[D1, abs(d)]) → E
15. Segment(D1, E) → i
16. Point(Circle[D, abs(d)]) → F
17. Segment(D, F) → j
18. Segment(F, E) → k
19. Polygon(D, D1, E, F) → polyd, d_2, d1, e_2, f_1
20. Point(Circle[A, abs(a)]) → G
21. Segment(A, G) → l
22. Point(Circle[A1, abs(a)]) → H
23. Segment(A1, H) → m
24. Segment(G, H) → n
25. Polygon(A, G, H, A1) → polya, a_2, g_2, h_1, a1
26. Point(Circle[B1, abs(b)]) → I
27. Segment(B1, I) → p
28. Point(Circle[B, abs(b)]) → J
29. Segment(B, J) → q
30. Polygon(B, B1, I, J) → polyb, b_2, b1, i_2, j_2
31. FitLineY({A, B, C, D}) → g