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Interior Angles of Polygons




Objective: I know how to solve problems involving the interior angles of polygons.


The formula to find the sum of the interior angles of any polygon is sum of angles = (n - 2)180° , where n is the number of sides of the polygon.


Read the lesson on angles of a polygon for more information and examples.


Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Find the size of each interior angle of a regular polygon with

5 sides
answer: °

20 sides
answer: °

24 sides
answer: °

36 sides
answer: °


Find the number of sides of a regular polygon with an interior angle of

140°
answer:

160°
answer:

162°
answer:

170°
answer:





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