相似直角三角形的几何作图

GeoGebra 命令及参数

1. Point(yAxis) → A
2. Point(yAxis) → B
3. Point(xAxis) → C
4. Polygon(A, B, C) → poly1, c, a, b
5. OrthogonalLine(B, b) → f
6. Intersect(f, b) → D
7. Polygon(A, B, D) → poly2, d, a_1, b_1
8. Polygon(D, B, C) → poly3, c_1, d_1, b_2
9. Angle(poly3) → δ, ε, ζ
10. Angle(poly2) → η, θ, ι
11. Polygon(A_1, B_1, C_1) → poly4, g, h, i
12. Polygon(D_1, C_2, B_2) → poly5, b_3, d_2, c_2
13. Polygon(D_2, B_3, A_2) → poly6, a_2, d_3, b_4