工字钢中的勾股定理应用

GeoGebra 命令及参数

1. Line(G, H) → a
2. Line(C, yAxis) → b
3. Midpoint(H, G) → D
4. Line(D, b) → c
5. Line(G, c) → d
6. Line(C, a) → e
7. Line(E, C) → f
8. Line(D, f) → g
9. Line(G, g) → h
10. Intersect(c, f) → F
11. Line(F, e) → i
12. Intersect(d, i) → I
13. Line(I, f) → j
14. Intersect(c, e) → J
15. Intersect(b, g) → K
16. Intersect(c, h) → L
17. Polygon(C, F, I, J) → poly1, c_1, f_1, i_1, j_1
18. Polygon(K, D, G, L) → poly2, k, d_1, g_1, l
19. Polygon(D, G, I, F) → poly3, d_2, g_2, i_2, f_2
20. Polygon(D, F, C, K) → poly4, d_3, f_3, c_2, k_1
21. Intersect(c, f) → M
22. Intersect(a, c) → N
23. Polygon(C, M, N) → poly5, n, c_3, m
24. Intersect(b, g) → O
25. Polygon(C, N, O) → poly6, o, c_4, n_1
26. Intersect(c, h) → P
27. Intersect(l, o) → Q
28. Polygon(N, G, P, Q) → poly7, n_2, g_3, p, q
29. Polygon(Q, N, O) → poly8, o_1, q_1, n_3