测量矩形对角线

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(xAxis) → B_1
3. Point(yAxis) → C_1
4. OrthogonalLine(B_1, xAxis) → a
5. Line(C_1, xAxis) → b
6. Intersect(a, b) → D_1
7. Circle(A, D_1) → c
8. Segment(A, C_1) → d
9. Segment(C_1, D_1) → e
10. Segment(D_1, B_1) → f
11. Point(c) → C
12. Angle(D_1, A, C) → α
13. Rotate(C_1, α, A) → D
14. Rotate(B_1, α, A) → B
15. Polygon(A, D, C) → poly1, e_1, a_1, f_1
16. Polygon(A, B, C) → poly2, e_2, a_2, g