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If you mean a regular pentagon then each interior angle is 108 degrees and each exterior angle is 72 degrees

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Q: What are the measures of an interior angle and an exterior angle of a regular pentagonpentagon?

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Exterior angle measures 18 degrees Interior angle measures 162 degrees

If exterior angles are 120 then interior angles must be 60 so you have an equilateral triangle

Each interior angle of the regular 5 sided polygon measures 108 degrees

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Hint: in a regular polygon interior plus exterior = 180o, always.

Exterior angle measures 18 degrees Interior angle measures 162 degrees

If exterior angles are 120 then interior angles must be 60 so you have an equilateral triangle

Each interior angle of the regular 5 sided polygon measures 108 degrees

360

180

360

Each exterior angle measures 20 degrees Each interior angle measures 160 degrees

Providing that it is a regular hexagon then the each interior angle measures 120 degrees and each exterior angle measures 60 degrees

Interior angle = 120 degrees Exterior angle = 60 degrees

Each interior angle is 156 degreesEach exterior angle is 24 degrees

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