椭圆与圆的交点

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(yAxis) → B
3. Point(xAxis) → C
4. Polygon(A, C, B) → poly1, b, a, c
5. Polygon(C, B, 4) → poly2, c_1, b_1, d, e, D, E
6. Polygon(B, A, 4) → poly3, b_2, a_1, f, g, F, G
7. Polygon(A, C, 4) → poly4, a_2, c_2, h, i, H, I
8. Midpoint(E, B) → J
9. Rotate(A, 90°, J) → A'
10. Rotate(A', 90°, J) → A''
11. Rotate(A'', 90°, J) → A'''
12. Polygon(B, A', D) → poly5, d_1, b_3, a'
13. Polygon(D, A'', E) → poly6, e_1, d_2, a''
14. Polygon(E, A''', C) → poly7, c_3, e_2, a'''
15. Line(H, I) → j
16. Line(G, F) → k
17. Intersect(j, k) → K
18. Polygon(A, F, K) → poly8, k_1, a_3, f_1
19. Polygon(K, I, A) → poly9, a_4, k_2, i_1