交点13

GeoGebra 命令及参数

1. Point(xAxis) → A
2. Intersect(xAxis, yAxis) → B
3. Midpoint(A, B) → C
4. Semicircle(B, C) → c
5. Semicircle(C, A) → d
6. Tangent(A, c) → a,
7. Intersect(yAxis, a) → D
8. Mirror(B, D) → B'
9. Semicircle(E, B') → e
10. Midpoint(B, C) → F
11. Midpoint(C, A) → G
12. Intersect(c, a) → H
13. Line(F, H) → b
14. Polygon(B, A, E, B') → poly1, b_1, a_1, e_1, b'
15. Intersect(b, e_1) → I
16. Semicircle(B', B) → f
17. Segment(A, D) → g
18. Segment(F, I) → h
19. Circle(E, A, C) → k