中点练习 by Tim Brzezinski (2)

GeoGebra 命令及参数

1. Segment(A, M) → f
2. Segment(M, B) → g
3. Intersect(h, eq1) → D
4. Polygon(M, D, A) → t1, b, a, d
5. Intersect(eq3, p) → E
6. Polygon(M, E, B) → t2, c, a_1, e
7. Segment(A, D) → i
8. Segment(D, M) → j
9. Segment(M, E) → k
10. Segment(E, B) → l
11. Angle(B, E, M) → α
12. Angle(M, D, A) → β
13. Dilate(A, If[0 < m ≤ 1, 1 - m, 0], M) → B'
14. Vector(A, B') → u
15. Translate(M, u) → A'
16. Translate(D, u) → D'
17. Translate(A, u) → B'_{1}
18. Polygon(A', D', B'_{1}) → t1', b'_{1}, a', d'