分数乘法示例 by Ivy Kong

GeoGebra 命令及参数

1. Polygon(A, B, 4) → poly1, a_1, b_1, e, f, C, D
2. Sequence(A + (k * (D - A)), k, 0, 1, 1 / b) → L1
3. Sequence(B + (k * (C - B)), k, 0, 1, 1 / b) → L2
4. Sequence(Segment[Element[L1, k], Element[L2, k]], k, 2, b) → L3
5. Polygon(D, C, S, R) → poly2, d_1, c_1, s, r
6. Polygon(E, F, 4) → poly3, e_1, f_1, g, h, G, H
7. Sequence(H + (k * (G - H)), k, 0, 1, 1 / d) → L4
8. Sequence(E + (k * (F - E)), k, 0, 1, 1 / d) → L5
9. Sequence(Segment[Element[L4, k], Element[L5, k]], k, 2, d) → L6
10. Polygon(H, U, T, E) → poly4, h_1, u, t, e_2