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Work out the number of sides in this regular polygon.
Mathematics 0580 · IGCSE · Angles
Angles — practice question
For a regular polygon, the interior angle and the exterior angle are related by the ratio interior : exterior = 11 : 1.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Method based on the interior angle sum: $180(n-2)=11\times360$” …
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