已知边长绘制正五边形

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Circle(B, A) → c
3. Circle(A, B) → d
4. Intersect(c, d, 2) → C
5. Intersect(c, d, 1) → D
6. Line(C, D) → b
7. Intersect(b, a) → E
8. Circle(E, Radius[d]) → f
9. Intersect(f, b, 1) → F
10. Circle(F, Segment[E, B]) → e
11. Line(B, F) → g
12. Intersect(e, g, 2) → G
13. Circle(B, G) → h
14. Intersect(d, h, 1) → H
15. Intersect(h, b, 1) → I
16. Line(H, A) → i
17. Intersect(h, b, 2) → J
18. Line(J, B) → j
19. Intersect(c, j, 2) → K
20. Segment(I, H) → q
21. Segment(I, K) → r
22. Polygon(I, H, A, B, K) → poly1, k, l, m, n, p