相似变换探索 by scrandall (2)

GeoGebra 命令及参数

1. Polygon(A, B, C, D, E) → poly1, AB, BC, CD, DE, EA
2. Intersect(xAxis, yAxis) → F
3. Segment(A, F) → FA
4. Segment(B, F) → FB
5. Segment(E, F) → EF
6. Segment(C, F) → FC
7. Segment(D, F) → FD
8. Textfield() → InputBox1
9. Dilate(A, k, F) → A'
10. Dilate(B, k, F) → B'
11. Dilate(C, k, F) → C'
12. Dilate(D, k, F) → D'
13. Dilate(E, k, F) → E'
14. Polygon(A', B', C', D', E') → poly1', A'B', B'C', C'D', D'E', E'A'
15. Segment(F, A') → FA'
16. Segment(F, B') → FB'
17. Segment(F, E') → FE'
18. Segment(F, C') → FC'
19. Segment(F, D') → FD'