黄金矩形 by Steve Weissburg

GeoGebra 命令及参数

1. Polygon(A, B, 4) → poly1, a, b, c, d, C, D
2. Line(A, B) → e
3. Line(C, D) → f
4. Line(A, D) → g
5. Line(B, C) → h
6. Midpoint(D, C) → E
7. Circle(E, B) → k
8. Intersect(k, f, 1) → F
9. OrthogonalLine(F, f) → i
10. Intersect(e, i) → G
11. Polygon(A, G, F, D) → poly2, a_1, g_1, f_1, d_1
12. Distance(G, A) → distanceGA
13. Distance(A, D) → distanceAD
14. Circle(B, G) → p
15. Intersect(p, h, 2) → H
16. OrthogonalLine(H, b) → j
17. Intersect(i, j) → I
18. Distance(B, G) → distanceBG
19. Distance(B, C) → distanceBC
20. Midpoint(G, I) → J
21. Circle(F, I) → q
22. Intersect(q, f, 2) → K
23. OrthogonalLine(K, f) → l
24. Intersect(j, l) → L
25. Distance(F, C) → distanceFC
26. Distance(H, C) → distanceHC
27. Distance(H, C) → HC
28. Polygon(B, G, F, C) → poly3, b_1, g_2, f_2, c_1
29. Polygon(H, I, F, C) → poly4, h_1, i_1, f_3, c_2
30. Circle(K, C) → r
31. Intersect(r, l, 2) → M
32. OrthogonalLine(M, l) → m
33. Intersect(h, m) → N
34. Distance(K, C) → distanceKC