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Grade 8 maths · L.13 · Angles and polygons

Interior angle of a regular polygon

In a regular polygon all angles are equal. Divide the total by the number of sides.

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  1. A regular polygon has 36 sides. How many degrees is each interior angle?

    Answer: 170

  2. A regular polygon has 18 sides. How many degrees is each interior angle?

    Answer: 160

  3. A regular polygon has 12 sides. How many degrees is each interior angle?

    Answer: 150

Tip: In a regular polygon all angles are equal. Divide the total by the number of sides.

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