四面体圆锥

GeoGebra 命令及参数

1. Point(xAxis) → A
2. Rotate(A, (2 * π / 3)) → A'
3. Point(Circle[Midpoint[A, A'], (Distance[A, A'] * sqrt(3) / 2), Segment[A, A']]) → B
4. Tetrahedron(A, A', B) → a, C, edgeBC, edgeA'C, faceAA'B, faceABC, faceAA'C, faceA'BC, edgeAB, edgeAA', edgeA'B, edgeAC
5. Circle(A, A', B) → c
6. Circle(A, A', C) → d
7. Circle(B, A', C) → e
8. Circle(A, B, C) → f
9. Cone(c, (-g)) → b, b_2, b_3
10. Cone(d, g) → i, i_2, i_3
11. Cone(e, (-g)) → l, l_2, l_3
12. Cone(f, (-g)) → n, n_2, n_3