几何作图：估算与调整角度

GeoGebra 命令及参数

1. Shuffle(list) → l1, {20, 30, 6, 28, 3, 22, 14, 1, 7, 25, 13, 19, 27, 10, 11, 18, 23, 15, 24, 17, 12, 21, 4, 5, 8, 29, 16, 26, 9, 2}
2. Element(l1, auswahl) → faktor
3. Point(Circle[S, 2.2]) → C
4. Point(Circle[S, 2.2]) → B
5. Angle(B, S, C) → α
6. Textfield(aInput) → InputBox1
7. Textfield(bInput) → InputBox2
8. Polygon(PtopLeftCornerFeedback, PtopRightCornerFeedback, PbottomRightCornerFeedback, PbottomLeftCornerFeedback) → rectangleCorrect, ptopleftcornerfeedback, ptoprightcornerfeedback, pbottomrightcornerfeedback, pbottomleftcornerfeedback
9. Segment(S, B) → f
10. Segment(S, C) → g
11. Rotate(B, winkel, S) → B'
12. Angle(B, S, B') → β
13. Segment(S, B') → h
14. Rotate(B, winkel + 5°, S) → B'_{1}
15. Angle(B, S, B'_{1}) → γ
16. Rotate(B, winkel - 5°, S) → B'_{2}
17. Angle(B, S, B'_{2}) → δ
18. CircleSector(S, B'_{2}, B'_{1}) → c