相似三角形 by Brian Pederson

GeoGebra 命令及参数

1. Line(A, B) → f
2. Point(f) → C
3. OrthogonalLine(C, yAxis) → g
4. Point(f) → D
5. OrthogonalLine(D, g) → h
6. Intersect(g, h) → E
7. OrthogonalLine(E, h) → i
8. Polygon(C, E, D) → poly1, d, c, e
9. Point(f) → F
10. Point(f) → P
11. Vector(C, P) → u
12. Dilate(C, s, C) → C'_1
13. Dilate(E, s, C) → E'_1
14. Dilate(D, s, C) → D'_1
15. Polygon(C'_1, E'_1, D'_1) → poly1'_1, d'_1, c'_1, e'_1
16. Translate(C'_1, u) → H
17. Translate(E'_1, u) → I
18. Translate(D'_1, u) → J
19. Polygon(H, I, J) → poly2, j, h_1, i_1
20. Point(f) → K
21. OrthogonalLine(K, yAxis) → k
22. Point(f) → L
23. OrthogonalLine(L, k) → l
24. Intersect(k, l) → M
25. Polygon(K, M, L) → poly3, l_1, k_1, m