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SSAT Upper Level
Quantitative (Math)

Interior Angles of a Regular Dodecagon

Very Hard Geometry And Measurement Polygons

A polygon is defined by the following properties: it has 12 sides and is regular, meaning all sides and angles are equal. If the length of each side is 10 cm, determine the measure of each interior angle of the polygon.

To find the measure of each interior angle of a regular polygon, we can apply the formula:

$$ ext{Interior Angle} =\frac{(n-2) imes 180}{n} $$

where n is the number of sides of the polygon.

Hint

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