三角形边长与角度关系探究

GeoGebra 命令及参数

1. Point(Circle[A, a]) → B
2. Segment(A, B) → c
3. Rotate(A, α, B) → A'
4. Ray(B, A') → d
5. Circle(B, b) → e
6. Intersect(e, d, 1) → C
7. Polygon(A, B, C) → poly1, c_1, a_1, b_1
8. Polygon(A, B, 4) → poly2, a_2, b_2, f, g, D, E
9. Polygon(B, C, 4) → poly3, b_3, c_2, h, i, F, G
10. Polygon(C, A, 4) → poly4, c_3, a_3, j, k, H, I
11. Angle(poly1) → β, γ, δ
12. If(l ≟ 1, b^(2), "?") → B5
13. If(l ≟ 1, b_1^(2), "?") → C5
14. If(l ≟ 1, a^(2), "?") → A5
15. If(l ≟ 1, If[A9 > C5, ">", If[A9 ≟ C5, "=", "<"]], "?") → B9
16. If(l ≟ 1, If[A9 > C5, ">", If[A9 ≟ C5, "=", "<"]], "?") → B8
17. If(l ≟ 1, C5, "?") → C9