筝形变换演示

GeoGebra 命令及参数

1. Point(yAxis) → A
2. Polygon(A, B, C, D) → poly1, a, b, c, d
3. Dilate(A, Seahawk, A) → A'
4. Dilate(B, Seahawk, A) → B'
5. Dilate(C, Seahawk, A) → C'
6. Dilate(D, Seahawk, A) → D'
7. Polygon(A', B', C', D') → poly1', a', b', c', d'
8. Segment(B, D) → e
9. Segment(C, A) → f
10. Segment(B', D') → g
11. Segment(C', A) → h
12. Intersect(e, f) → F
13. Intersect(g, h) → G
14. Segment(B', G) → i
15. Segment(G, D') → j