Rewrite the angle $120°$ in radians as a multiple of $\pi$ is of the form of $\frac{2\mathrm{\pi }}{a}$, then $a=$

Rewrite the angle $-20°$ in radians as a multiple of $\pi$.

If the answer is $-\frac{\mathrm{\pi }}{x}$, then find the value of $x$.

Rewrite the angle $-240°$ in radians as a multiple of $\pi$.

If the answer is $-\frac{4\mathrm{\pi }}{x}$, then find the value of $x$.

Rewrite the angle $-270°$ in radians as a multiple of $\pi$.

If the answer is $-\frac{3\mathrm{\pi }}{x}$, then find the value of $x$.

Rewrite the angle $144°$ in radians as a multiple of $\pi$.

If the answer is $\frac{4\mathrm{\pi }}{x}$, then find the value of $x$.