What is the relationship between the sum of interior angles and the number of sides? - Quora
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The sum of interior angles of a polygon is eight times the sum of its exterior angles. How many sides does this polygon have?
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Sum of the interior angles of a polygon
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If the sum of interior angles goes up by 180 for every point, wouldn't a circle be an astronomical amount? Why does it come back to 360°? : r/askmath
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sum of Interior angles of polygons. | Teaching Resources
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BestMaths
The Sum of the Interior Angles in a Polygon
