圆的方程解析与探索

GeoGebra 命令及参数

1. Point(Segment[(h + 1, y(C) + 10), (h + 1, y(C) - 10)]) → D
2. Line(A, B) → f
3. Vector(A, C) → u
4. Polygon(A, C, B) → t1, b, a_1, c
5. Segment(A, C) → h_{1}
6. Vector((h, 0), A) → w
7. Vector((0, 0), (h, 0)) → j
8. Point(Ray[A + (1, 0), A + (2, 0)]) → E
9. Circle(A, E) → p
10. Distance(A, E) → n
11. Vector(A, E) → v
12. Point(p) → F
13. Intersect(eq1, q) → G
14. Polygon(A, G, F) → t2, f_1, a_2, g_1
15. Segment(F, A) → r
16. Segment(A, G) → s
17. Segment(G, F) → t
18. Angle(A, G, F) → α
19. RotateText(text18, pi / 2) → text20
20. RotateText(text19, pi / 2) → text21