A Regular Polygon
octagon interior=135 exterior=45
An equilateral triangle.
Square or rectangle
Hint: in a regular polygon interior plus exterior = 180o, always.
4 such as a square
Exterior angles are supplementary with interior angles, so 180-30=150
If exterior angles are 120 then interior angles must be 60 so you have an equilateral triangle
If the polygon has n sides, each exterior angle is 360/n degrees.The interior angle is 180 less exterior angle.
Interior angles 178 so exterior angles 2. Number of sides of any regular polygon = 360/exterior angle You polygon has 180 sides. Bet you're glad you didn't have to sketch it!