七巧板与坐标系

GeoGebra 命令及参数

1. Polygon(A, B, 4) → poly1, f, g, h, i, C, D
2. Segment(A, C) → j
3. Midpoint(j) → E
4. Midpoint(h) → J
5. Midpoint(i) → H
6. Segment(H, J) → k
7. Midpoint(k) → I
8. Segment(I, B) → l
9. Midpoint(E, C) → G
10. Midpoint(E, A) → F
11. Segment(I, G) → m
12. Segment(H, F) → n
13. Line(A, C) → rettaAC
14. Polygon({A, B, E}) → t1
15. Polygon({B, E, C}) → t2
16. Polygon({D, J, H}) → t3
17. Polygon({H, F, A}) → t4
18. Polygon({H, F, E, I}) → q1
19. Polygon({I, G, C, J}) → q2
20. Polygon({I, G, E}) → t5
21. Line(H, J) → rettaHJ
22. Line(B, D) → rettaBD
23. Line(H, F) → rettaHF