What Is The Interior Angle Of A Decagon

Each angle measures 144 144 and they all add up to 1 440 1 440.

What is the interior angle of a decagon. You can use this generic formula to find the sum of the interior angles for an n sided polygon regular or irregular. So the sum of the interior angles of a decagon is 1440 degrees. See interior angles of a polygon.

Since 1440 10 144 each interior angle in a regular decagon has a measure of 144. 144 like any regular polygon to find the interior angle we use the formula 180n 360 n. For a decagon n 10.

A regular decagon has 10 equal length sides and equal measure interior angles. The interior angles of a dodecagon are a bit harder. A decagon is a 10 sided polygon with 10 interior angles and 10 vertices which is where the sides meet.

A regular decagon has equal interior angle measures. N 360 exterior angle 10 360 exterior angle exterior angle 36 36 interior angle 180 interior angle 144 sum of decagon interior angle 10 144 1440. Sum of interior angles n 2 x 180 sum of interior angles 10 x 180 1800.

The sum of the interior angles of a decagon is 10 2 180 1440 in a regular decagon all the angles are congruent at 1440 10 144. All worksheets have an answer key built into the last few pages with exception of the angles of depression elevation worksheet. An irregular decagon has sides and angles that are not all equal or congruent.