相似变换线

GeoGebra 命令及参数

1. Polygon(Dilate[B, d, O], Dilate[C, d, O], Dilate[O, d, O]) → poly1, a, b, c
2. Intersect(a, c) → B'
3. Intersect(a, b) → C'
4. Segment(O, B) → e
5. Segment(O, C) → f
6. Ray(O, B') → g
7. Ray(O, C') → h
8. Segment(O, B') → i
9. Distance(O, B) → distanceOB
10. Distance(O, B') → distanceOB'
11. Distance(O, C) → distanceOC
12. Distance(O, C') → distanceOC'
13. Segment(O, C') → j
14. Segment(B, C) → k
15. Segment(B', C') → l
16. Segment(O, B) → m
17. Segment(O, C) → n