利用对称轴证明全等

GeoGebra 命令及参数

1. Intersect(b, e) → A
2. Intersect(a, f) → B
3. Intersect(c, e) → C
4. Intersect(f, g) → D
5. Intersect(d, f) → E
6. Intersect(e, f) → F
7. Polygon(A, B, C, E) → poly1, a_1, b_1, c_1, e_1
8. Segment(B, E) → h
9. Segment(A, D) → i
10. Segment(C, D) → j
11. Segment(A, F) → k
12. Segment(F, C) → l
13. Point(poly1) → G
14. Segment(H, J) → m
15. Segment(J, G) → n
16. Segment(B, F) → p
17. Segment(F, C) → q
18. Angle(B, F, C) → α