Given data:
The given 30-gons.
Thee measurement of interior angle of 30-gons is,
[tex]\begin{gathered} S=(30-2)180^{\circ} \\ =5040^{\circ} \end{gathered}[/tex]
The measurement of each interior angle is,
[tex]\begin{gathered} a=\frac{5040^{\circ}}{30} \\ =168^{\circ} \end{gathered}[/tex]
The measurement of each exterior angle is,
[tex]\begin{gathered} e=\frac{360^{\circ}}{30} \\ =12^{\circ} \end{gathered}[/tex]
Thus, the sum of all exterior angle is 5040°, measurement of each interior angle is 168°, and measurement of each exterior angle is 12°.
