矩形

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. OrthogonalLine(C, xAxis) → f
3. OrthogonalLine(C, yAxis) → g
4. Intersect(f, xAxis) → B
5. Intersect(g, yAxis) → D
6. Polygon(A, B, C, D) → q1, a, b, c, b_1
7. Segment(A, C) → d
8. Segment(D, B) → i
9. Intersect(d, i) → S
10. OrthogonalLine(S, f) → j
11. Intersect(f, j) → E
12. Segment(S, E) → k
13. Angle(D, S, A) → φ
14. TableText({LaTeX[a, true, true]}, {LaTeX[b, true, true]}, {LaTeX[d, true, true]}) → text1
15. LaTeX(φ, true, true) → text2
16. Polygon(S, E, C) → t1, c_1, s, e
17. Angle(C, E, S) → α