五棱柱的截面

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(xAxis) → B
3. Polygon(A, B, 5) → poly1, a, b, c, d, e, C, D, E
4. Prism(poly1, 4) → f, F, faceAEJF, faceFGHIJ, edgeAF, edgeBG, edgeCH, edgeDI, edgeEJ, edgeFG, edgeGH, edgeHI, G, edgeIJ, edgeFJ, H, I, J, faceABGF, faceBCHG, faceCDIH, faceDEJI
5. Point(edgeCH) → K
6. OrthogonalLine(K, edgeDI, space) → g
7. OrthogonalLine(K, edgeBG, space) → h
8. Intersect(h, edgeBG) → L
9. Intersect(edgeDI, g) → M
10. Plane(L, K, M) → i
11. IntersectPath(i, f) → poly2, N, n, O, P, Q, R, j, k, l, m
12. Point(edgeGH) → S
13. Point(edgeFJ) → T
14. OrthogonalLine(S, b, space) → p
15. Intersect(p, b) → U
16. Plane(S, T, U) → q
17. IntersectPath(q, f) → poly3, V, W, Z, A_1, r, s, t, a_1
18. Point(edgeFG) → B_1
19. Point(edgeIJ) → C_1
20. Point(edgeCH) → D_1
21. Plane(B_1, C_1, D_1) → v
22. IntersectPath(v, f) → poly4, E_1, f_1, F_1, G_1, H_1, I_1, b_1, c_1, d_1, e_1