长方体在科瓦列夫投影中的演示

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. OrthogonalLine(A, yAxis) → a
3. Point(a) → B
4. OrthogonalLine(B, xAxis) → b
5. Point(b) → C
6. Polygon(A, B, C, D) → poly1, a_1, b_1, c, d
7. Polygon(E, F, G, H) → poly2, e, f, g, h
8. Polygon(D, C, G, H) → poly3, d_1, c_1, g_1, h_1
9. Polygon(A, E, F, B) → poly4, a_2, e_1, f_1, b_2
10. Polygon(B, F, G, C) → poly5, b_3, f_2, g_2, c_2
11. Polygon(A, E, H, D) → poly6, a_3, e_2, h_2, d_2
12. Polygon(M, L, I, J) → poly7, m, l, i, j
13. Polygon(N, O, P, K) → poly8, n, o, p, k
14. Intersect(n, k) → Q
15. Segment(L, Q) → q
16. Intersect(m, j) → R
17. Intersect(n, o) → S
18. Segment(R, S) → r
19. Segment(I, K) → s
20. Intersect(o, p) → T
21. Segment(J, T) → t
22. Point(n) → U
23. Point(n) → V
24. Segment(V, U) → a1
25. Segment(O, P) → b1
26. Vector(W, Z) → v
27. Vector(W, A1) → w
28. Vector(W, B1) → z
29. Vector(W, C1) → u1
30. Vector(W, D1) → v1
31. Vector(W, E1) → w1
32. Vector(W, F1) → z1
33. Vector(W, G1) → c1
34. Vector(W, H1) → d1