复数乘法 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_2, z_{z_1+z_2}) → d
5. Segment(z_1, z_{z_1+z_2}) → e
6. Segment(z_3, z_{z_1*z_2}) → r_{z_1*z_2}
7. Angle(z_4, z_3, z_2) → θ_2
8. Angle(z_4, z_3, z_{z_1*z_2}) → β
9. Segment(z_2, z_{z_1*z_2}) → c
10. 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