So the general rule is: Sum of Interior Angles = (n −2) × 180 °. Each Angle (of a Regular Polygon) = (n −2) × 180 ° / n. Here's an example to make it clearer: Example: What about a Regular Decagon (10 …

Jan 5, 2026 · Enter the total number of sides of any polygon into the calculator to determine the sum of the interior angles.

Here you will learn about interior angles of a polygon, including how to calculate the sum of interior angles for a polygon, single interior angles, and how to use this knowledge to solve problems.

Feb 19, 2026 · In particular, it is helpful to know how to calculate the sum of interior angles in a polygon. This can be done using a simple formula, or by dividing the polygon into triangles.

Learn how to calculate the sum and measure of interior angles of any polygon easily, with stepwise formulas, solved problems, and downloadable worksheets.

Calculate interior angles for polygons, triangles, and quadrilaterals easily. Review formulas and sample tables. Export clear reports for study, planning, checking, and practice.

The interior angles of any polygon always add up to a constant value, which depends only on the number of sides. For example the interior angles of a pentagon always add up to 540° no matter if it …

In order to find the measure of a single interior angle of a regular polygon (a polygon with sides of equal length and angles of equal measure) with n sides, we calculate the sum interior angles or $$ (\red n …

The interior angle formula is used to find the sum of all interior angles of a polygon. The sum of interior angles of a polygon of n sides is 180 (n-2) degrees.

Each interior angle of a regular polygon = (n-2)180°/n, where n is the number of sides in the polygon. The sum of the angles in any polygon is equal to the number of sides in the polygon minus two, all …