关于中心对称的几何作图 by Panpan1663

GeoGebra 命令及参数

1. Mirror(C, O) → C'
2. Mirror(A, O) → A'
3. Mirror(B, O) → B'
4. Segment(A, B) → a
5. Segment(B', A') → b
6. Polygon(A, B, C) → poly1, c, a_1, b_1
7. Polygon(A', B', C') → poly2, c', a', b'
8. Mirror(D, O) → D'
9. Mirror(E, O) → E'
10. Polygon(A, B, C, D, E) → poly3, a_2, b_2, c_1, d, e
11. Polygon(A', B', C', D', E') → poly4, a'_1, b'_1, c'_1, d', e'
12. Line(A, B) → f
13. Line(B', A') → g