扇形面积探索

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Circle(A, B) → c_{1}
3. Point(c_{1}) → C
4. Segment(A, C) → i
5. CircleArc(A, B, C) → e
6. CircleArc(A, C, B) → k
7. Textfield(a) → InputBox1
8. Textfield(b) → InputBox2
9. Textfield(c) → InputBox3
10. Textfield(d) → InputBox4
11. Textfield(f) → InputBox5
12. Textfield(g) → InputBox6
13. Textfield(h) → InputBox7
14. Textfield(j) → InputBox8
15. Segment(A, B) → l
16. Circle(D, d) → p
17. Rotate(E, (((100 * a) + (10 * b) + c) * pi / 180), D) → E'
18. CircleArc(D, E, E') → q
19. CircleArc(D, E', E) → r
20. Segment(D, E) → m
21. Angle(E, D, E') → α
22. Segment(D, E') → n
23. Rotate(E, ((10 * f) + g) / ((10 * h) + j), D) → E'_{1}
24. If((((10 * f) + g) * pi / ((10 * h) + j)) ≟ (((100 * a) + (10 * b) + c) * ((pi * d^(2))) / 360), "Sector area is correct!", (((10 * f) + g) * pi / ((10 * h) + j)) < (((100 * a) + (10 * b) + c) * ((pi * d^(2))) / 360), "Sector area is too small!", (((10 * f) + g) * pi / ((10 * h) + j)) > (((100 * a) + (10 * b) + c) * ((pi * d^(2))) / 360), "Sector area is too large!") → text4
25. RotateText(text4, ((-pi)) / 6) → text5
26. Mode(l1) → l2
27. Length(l2) → o
28. If(o ≟ 0, "No digits repeat.", "You have a repeated digit.") → text6
29. RotateText(text6, ((-pi)) / 6) → text7
30. CircleSector(A, B, C) → s