金字塔截面探究

GeoGebra 命令及参数

1. Point(yAxis) → A
2. Point(xAxis) → B
3. Polygon(A, B, Base) → poly1, a, D, G, H, I, J, e, f, g, j, k, l, m, C
4. Circle(A, B, C) → h
5. Center(h) → E
6. Pyramid(poly1, F) → i, faceABF, edgeBF, edgeCF, edgeDF, edge1, edge2, edge3, edge4, faceBCF, faceCDF, faceADF, face1, face2, face3, face4, edgeAF
7. Point(If[Base ≟ 3, list6, If[Base ≟ 4, list5, If[Base ≟ 5, list4, If[Base ≟ 6, list3, If[Base ≟ 7, list2, list1]]]]]) → K
8. Point(If[Base ≟ 3, list6, If[Base ≟ 4, list5, If[Base ≟ 5, list4, If[Base ≟ 6, list3, If[Base ≟ 7, list2, list1]]]]]) → M
9. Point(If[Base ≟ 3, list6, If[Base ≟ 4, list5, If[Base ≟ 5, list4, If[Base ≟ 6, list3, If[Base ≟ 7, list2, list1]]]]]) → L
10. If(w ≟ 0, Plane[M, L, K], If[w ≟ 1, Plane[A_1, Z, W], Plane[B_1, D_1, C_1]]) → o
11. IntersectPath(o, i) → poly2, N, p, q, r, s, t, a_1, b_1, c_1, d_1, O, P, Q, R, S, T, U, V