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Polygon Internal Angle Calculation Guide

Learn how to calculate the sum of internal angles in polygons using the formula 180(n-2). Explore examples with nonagon, decagon, and dodecagon to grasp this fundamental concept in geometry easily.

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Polygon Internal Angle Calculation Guide

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  1. Textbook 542-544

  2. Other Polygon Prefixes. • Nine=nonagon. • 10=decagon • 12=dodecagon

  3. To find the total number of internal degrees of a polygon use the formula: • 180(n-2)

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