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Year 9 maths · L.14 · Angles and polygons

Interior angle of a regular polygon: round to the nearest tenth

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

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  1. What is the measure of each interior angle of a regular polygon with 28 sides, in degrees? Round to the nearest tenth.

    Answer: 167.1

  2. A regular polygon has 27 sides. How many degrees is each interior angle? Round to the nearest tenth.

    Answer: 166.7

  3. What is the measure of each interior angle of a regular polygon with 22 sides, in degrees? Round to the nearest tenth.

    Answer: 163.6

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

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