正五边形的几何构造

GeoGebra 命令及参数

1. Polygon(A, B, 5) → poly1, f, g, h, i, j, C, D, E
2. LineBisector(E, D) → k
3. LineBisector(E, A) → l
4. LineBisector(D, C) → m
5. LineBisector(C, B) → n
6. LineBisector(A, B) → p
7. Intersect(k, m) → K
8. Circle(K, D) → d
9. Circle(K, L) → e
10. Point(e) → M
11. Segment(M, D) → q
12. Segment(M, E) → r
13. Segment(M, A) → s
14. Segment(M, B) → t
15. Segment(M, C) → a
16. Point(d) → F
17. Segment(K, F) → f_1