空间对角线示例

GeoGebra 命令及参数

1. Intersect(zAxis, xAxis) → A
2. Point(yAxis) → B
3. Point(xAxis) → D
4. Polygon(A, B, C, D) → poly1, a, b, c, d
5. Point(zAxis) → H
6. Prism(A, B, C, D, H) → e, E, edgeAB, edgeBC, edgeCD, edgeAD, edgeAH, edgeBE, edgeCF, edgeDG, edgeEH, edgeEF, F, edgeFG, edgeGH, G, faceABCD, faceABEH, faceBCFE, faceCDGF, faceADGH, faceEFGH
7. Intersect(edgeDG, d) → I
8. Intersect(edgeEF, edgeBE) → J
9. Segment(I, J) → f
10. Intersect(b, a) → K
11. Segment(I, K) → g
12. Polygon(J, K, I) → poly2, i, j, k