菱形性质 by Simon

GeoGebra 命令及参数

1. Line(A, B) → f
2. LineBisector(B, A) → g
3. Point(g) → C
4. Intersect(f, g) → D
5. Circle(D, C) → c
6. Intersect(c, g, 2) → E
7. Polygon(A, C, B, E) → q1, a, c_1, b, e
8. Segment(A, B) → h
9. Segment(E, C) → i
10. Angle(B, E, A) → α
11. Angle(E, A, C) → β
12. Angle(A, C, B) → γ
13. Angle(C, B, E) → δ
14. Segment(A, C) → j
15. Segment(E, B) → k
16. Segment(E, A) → l
17. Segment(B, C) → m