三角不等式与相似性几何作图

GeoGebra 命令及参数

1. Circle(A, B) → c
2. Point(c) → C
3. Polygon(B, A, C) → poly1, c_1, b, a
4. Point(c) → D
5. Point(c) → E
6. Polygon(A, D, E) → poly2, e, a_1, d
7. Angle(C, A, B) → α
8. Angle(D, A, E) → β
9. Polygon(F, G, H) → poly3, h, f, g
10. Point(h) → I
11. Line(I, f) → i
12. Intersect(i, g) → J
13. Distance(G, F) → distanceGF
14. Distance(I, F) → distanceIF
15. Distance(H, F) → distanceHF
16. Distance(J, F) → distanceJF