Interior angle = 120 degrees
Exterior angle = 60 degrees
Each interior angle of the regular 5 sided polygon measures 108 degrees
1440 degrees
1440 degrees
360
1800 degrees
Hint: in a regular polygon interior plus exterior = 180o, always.
Each interior angle of the regular 5 sided polygon measures 108 degrees
1260
360
1440 degrees
1440 degrees
360
1800 degrees
If exterior angles are 120 then interior angles must be 60 so you have an equilateral triangle
1440 degrees
540 degrees
180