棱锥体积

GeoGebra 命令及参数

1. Polygon(D, B, 4, xOyPlane) → poly1, f, g, h, i, F, G
2. Cube(poly1, true) → a, H, edgeDH_{1}, edgeGK_{1}, edgeHK_{1}, edgeHI_{1}, edgeBI_{1}, edgeIJ_{1}, edgeFJ_{1}, edgeJK_{1}, I, J, K, faceDGKH, faceBDHI_{1}, faceBFJI_{1}, faceFGKJ, faceHIJK
3. Pyramid(D, B, F, G, K) → b, faceBDGF, edgeDK_{1}, edgeBK_{1}, edgeFK_{1}, edgeGK, faceBDK_{1}, faceBFK_{1}, faceFGK, faceDGK, edgeBD_{1}, edgeBF_{1}, edgeFG, edgeDG
4. Pyramid(D, B, I, H, K) → c, faceBDHI, edgeDK, edgeBK_{2}, edgeIK_{1}, edgeHK, faceBDK, faceBIK_{1}, faceHIK, faceDHK, edgeBD, edgeBI_{2}, edgeHI, edgeDH
5. Line(D, B) → j
6. Rotate(c, α, j) → c'
7. Pyramid(B, F, J, I, K) → d, faceBFJI, edgeBK, edgeFK, edgeJK, edgeIK, faceBFK, faceFJK, faceIJK, faceBIK, edgeBF, edgeFJ, edgeIJ, edgeBI
8. Point(edgeBK) → L
9. Pyramid(faceBFJI, J) → e, faceBFJ, faceFJJ, faceIJJ, faceBIJ, edgeBJ, edgeFJ, edgeJJ, edgeIJ
10. Point(edgeFJ) → M
11. Line(B, F) → k
12. Rotate(d, α, k) → d'