费马点与等边三角形

GeoGebra 命令及参数

1. Polygon(A, B, C) → t1, c, a, b
2. Polygon(C, B, 3) → ta, f, g, h, A'
3. Circle(B, A', C) → d_1
4. Segment(A, A') → d
5. Intersect(d_1, d, 2) → F
6. Segment(A, F) → p
7. Segment(B, F) → q
8. Segment(C, F) → r
9. Polygon(A, C, 3) → tb, j, k, l, B'
10. Polygon(B, A, 3) → tc, m, n, c_2, C'
11. Segment(B', B) → t
12. Segment(C, C') → f_1
13. Vector(B', A) → u
14. Translate(B', u) → E'
15. Translate(B, u) → E
16. Segment(E', E) → t'
17. Vector(C, A') → v
18. Translate(C, v) → C'_1
19. Translate(C', v) → G'
20. Segment(C'_1, G') → g_1
21. Segment(B, E) → b_2
22. Circle(C', B, A) → s
23. Circle(A, C, B') → c_1