三棱柱的体积

GeoGebra 命令及参数

1. Intersect(xAxis, zAxis) → B
2. Point(yAxis) → A
3. Point(xAxis) → D
4. Polygon(A, E, C) → poly1, c, a, e
5. Prism(poly1, 0) → b, F, edgeCH, edgeFG, edgeGH, edgeFH, G, H, faceAEGF, faceCEGH, faceACHF, faceFGH, edgeAF, edgeEG
6. Prism(faceFGH, -9) → d, I, edgeHK, edgeIJ, edgeJK, edgeIK, J, K, faceFGJI, faceGHKJ, faceFHKI, faceIJK, edgeFI, edgeGJ
7. Polygon(L, N, M) → poly2, m, l, n
8. Intersect(edgeJK, edgeIJ) → P
9. Segment(O, P) → g