复数加法 by Martin Flashman

GeoGebra 命令及参数

1. Angle(z_4, z_3, z_1) → θ_1
2. Segment(z_3, z_1) → r_1
3. Segment(z_3, z_2) → r_2
4. Segment(z_3, z_{z_1+z_2}) → r_{z_1+z_2}
5. Angle(z_4, z_3, z_2) → θ_2
6. Angle(z_4, z_3, z_{z_1+z_2}) → β
7. Segment(z_2, z_{z_1+z_2}) → c
8. CurveCartesian(((1 - t) * x(z_1)) + (t * x(z_{z_1+z_2})), ((1 - t) * y(z_1)) + (t * y(z_{z_1+z_2})), t, 0, 1) → f
9. Segment(z_1, z_{z_1+z_2}) → d
10. Segment(z_2, z_{z_1+z_2}) → e