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Polygon angle sums and regular polygons

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Question 1 of 8

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The data describe a polygonal garden bed

The polygon has \(3\) sides

3-sided polygon.
All the interior angles are marked. The polygon does not have to be regular

Let \(S\) be the total of the interior angles

(a)1 mark

What is the name of a polygon with \(3\) sides?

(b)1 mark

Calculate the interior-angle sum in degrees