144
The sum of the interior angles of a decagon is 1440 degrees The sum of the interior angles of a triangle is 180 degreesThe difference in the sum of the interior angles of a decagon compared to a triangle = 1440 degrees minus 180 degrees = 1260 degrees
360
1440
Add each side of the decagon, or all ten sides, to get the sum.
144
The sum of the interior angles of a decagon is 1440 degrees The sum of the interior angles of a triangle is 180 degreesThe difference in the sum of the interior angles of a decagon compared to a triangle = 1440 degrees minus 180 degrees = 1260 degrees
1440
360
The 10 interior angles of a decagon add up to 1440 degrees
A decagon is a polygon with 10 sides and 10 angles. Each angle in a regular decagon measures 144 degrees. The sum of the interior angles of a decagon is 1440 degrees. Decagons have lines of symmetry that pass through the center of the shape and divide it into two equal halves.
The interior angles of a 10 sided decagon add up to 1440 degrees.
1440
360 degrees
1440
Add each side of the decagon, or all ten sides, to get the sum.
144 degrees