三等分长方体 by Lamberto Lamberti

GeoGebra 命令及参数

1. Segment(O, A) → a
2. Segment(O, B) → b
3. Line(B, a) → c
4. Line(A, b) → d
5. Intersect(d, c) → D
6. Polygon(O, B, D, A) → poly1, o, b_1, d_1, a_1
7. Vector(O, C) → u
8. Translate(poly1, u) → poly1'
9. Translate(A, u) → A'_1
10. Translate(B, u) → B'
11. Translate(D, u) → D'_1
12. Prism(O, A, D, B, C) → e, V, edgeAO, edgeAD, edgeBD, edgeBO, edgeCO, edgeAE, edgeDF, edgeBG, edgeCE, edgeEF, D', edgeFG, edgeCG, G, faceADBO, faceAECO, faceADFE, faceBDFG, faceBGCO, faceCEFG
13. Pyramid(Polygon[B, D, D', B'], V) → uno, faceBDV_1, faceDD'V, faceB'D'V, faceBB'V_1, edgeBV_1, edgeDV_1, edgeD'V, edgeB'V_1
14. Pyramid(Polygon[O, B, B', C], V) → due, faceBOV_1, faceBB'V, faceB'CV, faceCOV, edgeOV_1, edgeBV_2, edgeB'V, edgeCV
15. Pyramid(Polygon[O, B, D, A], V) → tre, faceBOV, faceBDV, faceADV, faceAOV, edgeOV, edgeBV, edgeDV, edgeAV
16. Sphere(H, Distance[E, F]) → f
17. PointIn(f) → I
18. PointIn(f) → J
19. PointIn(f) → K
20. Vector(H, I) → v
21. Vector(H, J) → w
22. Vector(H, K) → g
23. Translate(uno, w) → uno'
24. Translate(due, g) → due'
25. Translate(tre, v) → tre'
26. Segment(E, F) → h