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GeoGebra 命令及参数

1. Point(yAxis) → B
2. Segment(B, C) → f
3. Segment(C, D) → g
4. Segment(A, D) → h
5. Segment(A, B) → i
6. Sequence(B + ((k * len / horizontal), 0), k, 1, horizontal - 1) → L_1
7. Sequence(A + ((k * len / horizontal), 0), k, 1, horizontal) → L_2
8. Sequence(B + (0, ((-k) * len / Vertical)), k, 1, Vertical) → L_3
9. Sequence(C + (0, ((-k) * len / Vertical)), k, 1, Vertical) → L_4
10. Sequence(Segment[L_2(k), L_2(k) + (0, segLen)], k, 1, horizontal - 1) → L_6
11. Sequence(Segment[L_4(k), L_4(k) - (segLen, 0)], k, 1, Vertical - 1) → L_8
12. Sequence(Segment[L_1(k), L_1(k) - (0, If[a, len, segLen])], k, 1, horizontal - 1) → L_5
13. Sequence(Segment[L_3(k), L_3(k) + (If[a, len, segLen], 0)], k, 1, Vertical - 1) → L_7