Free Online Polygon Angle Calculator: Find Interior, Exterior, & Central Angles

Calculate Polygon Angles Instantly

Enter an integer value greater than or equal to 3.

Unlock the secrets of polygon geometry with our free Polygon Angle Calculator. Quickly determine the interior, exterior, and central angles for any regular polygon by simply entering the number of sides. This essential tool is perfect for students, teachers, and professionals needing instant, accurate angle calculations.

Formula:

To understand how polygon angles are calculated, consider the following formulas for a regular polygon with n sides:

  • Sum of Interior Angles: (n − 2) × 180°
  • Each Interior Angle: ((n − 2) × 180°) / n
  • Each Exterior Angle: 360° / n
  • Each Central Angle: 360° / n

Where n represents the number of sides of the polygon.

Mathematics and Geometry Tools

3D Section Formula for Dividing Line Segments by Ratio

Go to Calculator

AAS Triangle : Solve for Unknown Angles and Sides

Go to Calculator

ABC Triangle : Solve Triangles with Ease

Go to Calculator

Acute Triangle : Calculate Angles, Sides & Verify Triangle Type

Go to Calculator

Alternate Interior Angles Theorem Proof

Go to Calculator

Altitude of an Isosceles Triangle

Go to Calculator