相似变换基本性质

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c, a, b
2. Dilate(A, Scale, D) → A'
3. Dilate(B, Scale, D) → B'
4. Dilate(C, Scale, D) → C'
5. Polygon(A', B', C') → poly1', c', a', b'
6. Ray(D, A') → d
7. Ray(D, C') → e
8. Ray(D, B') → f
9. Segment(D, A) → DA
10. Segment(D, C) → DC
11. Segment(D, B) → DB
12. Segment(D, A') → DA'
13. Segment(D, C') → DC'
14. Segment(D, B') → DB'
15. Segment(A, A') → AA'
16. Segment(C, C') → CC'
17. Segment(B, B') → BB'
18. FractionText(Scale) → FractionScale
19. FractionText(DATenth) → DAFraction
20. FractionText(DBTenth) → DBFraction
21. FractionText(DCTenth) → DCFraction
22. FractionText(DA'Tenth) → DA'Fraction
23. FractionText(DB'Tenth) → DB'Fraction
24. FractionText(DC'Tenth) → DC'Fraction
25. Denominator(Scale) → ScaleDenom
26. Numerator(Scale) → ScaleNumer
27. Angle(B, A, C) → α
28. Angle(B', A', C') → β
29. Angle(C', B', A') → γ
30. Angle(C, B, A) → δ
31. Segment(A, A') → AA'_2