梯形柱的表面展开图与表面积

GeoGebra 命令及参数

1. Polygon(A, E, H, D) → poly1, a_1, e, h_1, d
2. Polygon(E, F, G, H) → poly2, e_1, f, g, h_2
3. Polygon(I, B, C, J) → poly3, i, b_1, c, j
4. Polygon(A, K, L, B) → poly4, a_2, k, l, b_2
5. Polygon(M, N, C, D) → poly5, m, n, c_1, d_1
6. Segment(G, H) → p
7. Segment(H, D) → q
8. Segment(C, J) → f_1
9. Segment(F, E) → g_1
10. Segment(E, A) → i_1
11. Segment(B, I) → m_1
12. Segment(D, C) → r
13. Segment(A, B) → s
14. Intersect(b_1, f_1) → O
15. Intersect(d, r) → P
16. Polygon(D, A, B, C) → poly6, d_2, a_3, b_3, c_2
17. Midpoint(j) → Q
18. Polygon(R, S, T, U) → poly7, r_1, s_1, t_1, u_1