三棱柱的表面展开图与表面积 by Tok Hong Da

GeoGebra 命令及参数

1. Segment(B, C) → f
2. Point(f) → N_1
3. Distance(B, N_1) → BN
4. Distance(N_1, B) → NB
5. Distance(N_1, C) → NC
6. Polygon(A, B, E, D) → poly1, a, b_1, e, d
7. Polygon(G, C, F, H) → poly2, g, c, f_1, h_1
8. Polygon(I, B, C) → poly3, c_1, i, b_2
9. Polygon(J, F, E) → poly4, e_1, j, f_2
10. Polygon(B, E, F, C) → poly5, b_3, e_2, f_3, c_2
11. Segment(A, B) → k
12. Segment(B, C) → l
13. Segment(G, C) → m
14. Segment(D, E) → n
15. Intersect(b_1, n) → K
16. Segment(E, F) → p
17. Segment(F, H) → q
18. Midpoint(h_1) → L
19. Polygon(M, N, O, P) → poly6, m_1, n_1, o_1, p_1