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Mathematics for IGCSE & O level - Angles (Section 1 - No. 22)

Which statement is true about the interior angles of a polygon?
The sum of the interior angles increases with the number of sides.
They are always acute.
The sum of the interior angles is (n-2) * 180°.
They always add to 360°

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The sum of the interior angles of a polygon is (n-2) * 180°. The sum increases with the number of sides.

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