直角三角形中的比例 by omirontchik

GeoGebra 命令及参数

1. Segment(A, B) → a
2. OrthogonalLine(B, a) → b
3. Point(b) → C
4. Segment(A, C) → c
5. Segment(C, B) → d
6. Polygon(A, C, B) → poly1, b_1, a_1, c_1
7. Dilate(A, 0.23, D) → I
8. Dilate(C, 0.23, D) → K
9. Dilate(B, 0.23, D) → J
10. Polygon(I, K, J) → poly1', b', a', c'
11. Dilate(A, 0.68, E) → H
12. Dilate(C, 0.68, E) → F
13. Dilate(B, 0.68, E) → G
14. Polygon(H, F, G) → poly1'_1, b'_1, a'_1, c'_1
15. Segment(J, K) → e
16. Angle(K, J, I) → α
17. Angle(F, G, H) → β
18. Angle(C, B, A) → γ
19. LaTeX(f, true, true) → text3
20. Angle(J, I, K) → δ
21. Angle(G, H, F) → ε
22. Angle(B, A, C) → ζ