How To Calculate The Sum Of Interior Angles In A Decagon

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In this formula, we would calculate the sum of interior angles in a decagon however, before we proceed, it is important to know what a decagon is and how it looks like.

What Is a Decagon

A Decagon is an object with ten sides and it can also be defined as a ten(10) sided polygon. A decagon has 10 edges and vertices.

How Do I Calculate The Sum Of Interior Angles In a Decagon?

The formula for calculating the sum of interior angles in a decagon is (n-2) * 180 but the formula (2n – 4) * 90 can be used instead also it is important to note that formulas are the same and you can choose anyone you like to use.

Since a decagon has 10 sides, the sum of total internal angles in a decagon would be given as (10-2)*180 or (2(10)-4)*90 and this would be equal to 1440 degrees

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