SAS三角形探索

GeoGebra 命令及参数

1. Circle(G, s1) → c
2. Point(c) → H
3. Circle(G, s2) → d
4. Segment(G, H) → f
5. Rotate(H, (-(a1°)), G) → B'
6. Angle(B', G, H) → α
7. Ray(G, B') → g
8. Intersect(d, g, 1) → I
9. Segment(G, I) → h
10. Segment(I, H) → i
11. Circle(D, s1) → e
12. Point(e) → E
13. Segment(D, E) → j
14. Rotate(E, (-(a1°)), D) → E'
15. Angle(E', D, E) → β
16. Circle(D, s2) → k
17. Ray(D, E') → l
18. Intersect(k, l, 1) → F
19. Segment(D, F) → m
20. Segment(F, G_{1}) → n
21. Circle(F, G_{1}) → p
22. Ray(F, G_{1}) → q