相似三角形作图

GeoGebra 命令及参数

1. Point(Circle[A, abs(AB)]) → B
2. Segment(A, B) → a
3. Circle(A, AC) → c
4. Circle(B, BC) → d
5. Intersect(c, d, 1) → C
6. Segment(C, A) → b
7. Segment(B, C) → e
8. Polygon(A, B, C) → poly1, c_1, a_1, b_1
9. Point(Circle[A', abs((k * AB))]) → B'
10. Segment(A', B') → f
11. Circle(A', (k * AC)) → g
12. Circle(B', (k * BC)) → h
13. Intersect(g, h) → C', G, ,
14. Segment(C', A') → i
15. Segment(C', B') → j
16. Polygon(C', A', B') → poly2, e_1, f_1, d_1
17. Textfield(AC) → inputBox1
18. Textfield(AB) → inputBox2
19. Textfield(BC) → inputBox3
20. Textfield(k) → inputBox4