what is the measure of each interior angle of a regular decagon

The measure of each interior angle of a regular decagon (a polygon with 10 sides) can be found using the formula:

Interior angle = (n-2) * 180 / n,

where n represents the number of sides of the polygon.

For a regular decagon, n = 10, so we have:

Interior angle = (10-2) * 180 / 10 = 8 * 180 / 10 = 144 degrees.

Therefore, the measure of each interior angle of a regular decagon is 144 degrees.