垂直平分线构造：几何作图与核心概念

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Circle(A, 8) → c
3. Circle(B, 8) → d
4. Intersect(c, d, 1) → C
5. Intersect(c, d, 2) → D
6. Line(C, D) → b
7. Distance(A, B) → distanceAB
8. Intersect(b, a) → E
9. Angle(C, E, A) → α
10. Circle(F, G) → e
11. Circle(G, F) → f
12. Intersect(e, f, 1) → H
13. Segment(H, F) → g
14. Segment(F, G) → h
15. Segment(G, H) → i
16. Distance(F, G) → distanceFG
17. Distance(G, H) → distanceGH
18. Distance(H, F) → distanceHF
19. Segment(I, J) → j
20. Segment(K, J) → k
21. Circle(J, L) → p
22. Intersect(p, j, 1) → M
23. Intersect(p, k, 1) → N
24. Circle(M, 6) → q
25. Circle(N, 6) → r
26. Intersect(q, r, 1) → O
27. Angle(N, J, O) → β
28. Angle(O, J, M) → γ
29. Segment(J, O) → l