线段中点演示 by Broadrick Secondary School

GeoGebra 命令及参数

1. Line(A, yAxis) → a
2. Line(B, yAxis) → b
3. Line(A, xAxis) → c
4. Line(B, xAxis) → d
5. Intersect(a, xAxis) → C_1
6. Intersect(b, xAxis) → D_1
7. Intersect(c, yAxis) → E
8. Intersect(d, yAxis) → F
9. Segment(A, C_1) → AVertical
10. Segment(B, D_1) → BVertical
11. Segment(B, F) → BHorizontal
12. Segment(E, A) → AHorizontal
13. Segment(A, B) → AB
14. Midpoint(AB) → M
15. Line(M, yAxis) → j
16. Line(M, xAxis) → k
17. Intersect(j, xAxis) → H
18. Intersect(k, yAxis) → I
19. Segment(M, H) → MVertical
20. Segment(M, I) → MHorizontal
21. Intersect(MVertical, c) → D
22. Intersect(k, BVertical) → C
23. Segment(A, D) → e
24. Segment(D, M) → f
25. Segment(M, C) → g
26. Segment(C, B) → h