基角定理演示

GeoGebra 命令及参数

1. Point(f) → A
2. Point(f) → B
3. LineBisector(A, B) → g
4. Point(g) → C
5. Polygon(B, C, A) → t1, a, b, c
6. Intersect(f, g) → D
7. Polygon(C, D, B) → t2, b_1, c_1, d
8. Rotate(C, π, g) → C'
9. Rotate(D, π, g) → D'
10. Rotate(B, e, g) → B'
11. Polygon(C', D', B') → t2', b', c', d'
12. InteriorAngles(t2') → α, β, γ
13. InteriorAngles(t2) → δ, ε, ζ
14. Segment(B, C) → h
15. LineBisector(a) → i
16. Intersect(i, a) → E
17. Point(i) → F
18. Point(i) → G
19. Segment(F, G) → j
20. LineBisector(b) → k
21. Intersect(k, b) → H
22. Point(k) → I
23. Point(k) → J
24. Segment(J, I) → l