图形放大与缩小：相似变换的几何构造

GeoGebra 命令及参数

1. Polygon(A, B, C, D) → q1, a, b, c, d
2. Polygon(P, Q, R, S) → q2, p, q, r, s
3. Polygon(A, ((2 * A) + B) / 3, (D + C) / 2, D) → q3, f, g, i_1, j_1
4. Polygon((D + C) / 2, ((2 * A) + B) / 3, ((2 * B) + A) / 3) → t1, h, i, j
5. Polygon(C, (C + D) / 2, ((2 * B) + A) / 3, B) → q4, k, l, k_1, l_1
6. Polygon(P, ((2 * P) + Q) / 3, (R + S) / 2, S) → q5, m, n, m_1, n_1
7. Polygon((R + S) / 2, ((2 * P) + Q) / 3, ((2 * Q) + P) / 3) → t2, t, e, f_1
8. Polygon(R, (R + S) / 2, ((2 * Q) + P) / 3, Q) → q6, g_1, h_1, p_1, q_1
9. Sequence(Segment[(i, y(Corner[2])), (i, y(Corner[3]))], i, ceil(x(Corner[1])), floor(x(Corner[2]))) → l1
10. Sequence(Segment[(x(Corner[1]), i), (x(Corner[2]), i)], i, ceil(y(Corner[2])), floor(y(Corner[3]))) → l2