Polygon interior angle

Polygon interior angle: use number of sides. Review the formula, worked example and calculation steps.

Inputs

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RESULT
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Formula & explanation
Interior angle = 180(n−2)/n

Variables & units

Number of sides
Numeric value · minimum 3, maximum 100000

Worked example

A regular hexagon has interior angle 120°.

Assumptions

This returns each interior angle of a regular convex polygon.

Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.

Practice with an example

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