菱形的性质 by Tan Chee Kian

GeoGebra 命令及参数

1. Circle(A, B) → c_1
2. Circle(B, A) → d_1
3. Point(d_1) → C
4. Circle(C, B) → e_1
5. Intersect(c_1, e_1, 2) → D
6. Segment(A, D) → AD
7. Segment(D, C) → CD
8. Segment(B, C) → BC
9. Segment(A, B) → AB
10. Segment(A, C) → AC
11. Segment(B, D) → BD
12. Intersect(AC, BD) → E
13. Angle(D, E, C) → CED
14. Angle(D, E, A) → AED
15. Angle(A, E, B) → AEB
16. Angle(B, E, C) → BEC
17. Angle(A, D, C) → ADC
18. Angle(D, A, B) → BAD
19. Angle(A, B, C) → ABC
20. Angle(B, C, D) → BCD
21. Angle(B, A, E) → BAE
22. Angle(D, A, E) → DAE