放大镜IV示例

GeoGebra 命令及参数

1. Textfield(f) → Textfeld1
2. Point(f) → A
3. Polygon(A + ((-h), (-h)), A + (h, (-h)), A + (h, h), A + ((-h), h)) → Lupe, i, j, l, q
4. Midpoint(A_l, Al) → B
5. Midpoint(A, Ar) → C
6. Segment(A + (h, (-h)), A + (2 * (h, (-h)))) → griff1
7. Segment(A + (min, (-min)), A + (2 * (min, (-min)))) → griff2
8. If(h > min, griff1, griff2) → griff
9. Polygon(F, G, D, E) → Vieleck4, f_2, g_2, d_2, e_2
10. Polynomial({A_l, A, A_r}) → p