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Polygon Interior Angles Calculate interior angle sum and each angle of a regular polygon.

Result

Calculated result 0 Based on the values entered.
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Polygon Interior Angles Calculate interior angle sum and each angle of a regular polygon. — free online calculator.

Formula

Sum = (n−2) × 180°; Each = Sum/n
  • Polygon Interior Angles Calculate interior angle sum and each angle of a regular polygon. calculates its result from Periods. It uses the formula Sum = (n−2) × 180°; Each = Sum/n. Change any input to recalculate the result instantly.
  • The main inputs are Periods. Enter them in the units and format shown in the calculator.
  • Keep comparable quantities in compatible units whenever the formula combines or compares them.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Polygon Interior Angles Calculate interior angle sum and each angle of a regular polygon.

Inputs
  • Periods: 2

Using Periods = 2, the calculated result is 0.

Sample result: Calculating…

Frequently asked questions

What does the Polygon Interior Angles Calculate interior angle sum and each angle of a regular polygon. calculate?

Polygon Interior Angles Calculate interior angle sum and each angle of a regular polygon. — free online calculator.

Which values should I enter?

Enter Periods using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: Sum = (n−2) × 180°; Each = Sum/n.

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026