重心坐标

GeoGebra 命令及参数

1. Line(B, C) → g
2. Line(C, A) → h
3. Line(D, h) → k
4. Intersect(g, k) → J
5. Line(A, B) → f
6. Line(D, f) → i
7. Intersect(g, i) → G
8. Intersect(h, i) → H
9. Intersect(f, k) → I
10. Line(D, g) → j
11. Intersect(f, j) → F
12. Area(D, I, F) → c1
13. Intersect(h, j) → E
14. Area(D, E, H) → b1
15. Area(D, G, J) → a1
16. Sequence((t * B) + ((1 - t) * C), t, 0, 1, 0.1) → L_1
17. Sequence((t * A) + ((1 - t) * B), t, 0, 1, 0.1) → L_2
18. Sequence((t * C) + ((1 - t) * A), t, 0, 1, 0.1) → L_3
19. Sequence(Segment[(t * B) + ((1 - t) * A), (t * C) + ((1 - t) * A)], t, 0, 1, 0.1) → L_4
20. Sequence(Segment[(t * A) + ((1 - t) * C), (t * B) + ((1 - t) * C)], t, 0, 1, 0.1) → L_5
21. Sequence(Segment[(t * C) + ((1 - t) * B), (t * A) + ((1 - t) * B)], t, 0, 1, 0.1) → L_6
22. Distance(B, F) → BF
23. Distance(A, B) → AB
24. Distance(G, C) → GC
25. Distance(B, C) → BC
26. Distance(B, G) → BG
27. Polygon(D, G, J) → t1, j_1, d_1, g_1
28. Polygon(I, F, D) → t2, d_2, i_1, f_1
29. Polygon(D, E, H) → t3, h_1, d_3, e
30. Centroid(t2) → K
31. Centroid(t1) → L
32. Centroid(t3) → M