成比例图形

GeoGebra 命令及参数

1. Point(Ray[C, C + (1, 0)]) → P
2. Segment(C + (0, (-gap)), C + (w, (-gap))) → wSeg
3. Segment(C + (w + gap, 0), C + (w + gap, h)) → hSeg
4. Segment((0, 0), (w, 0)) → wSegGraph
5. Segment((0, 0), (0, h)) → hSegGraph
6. Segment((w, 0), (w, h)) → vBoxSeg
7. Segment((0, h), (w, h)) → hBoxSeg
8. Ray((0, 0), (W, H)) → Graph
9. Point(Graph) → dP_i
10. Point(Graph) → dP_f
11. Vector(dP_i, (x(dP_f), y(dP_i))) → dxVec
12. Vector((x(dP_f), y(dP_i)), dP_f) → dyVec