cmon decagon? 10 sides right? well here we go 180(10 - 2) 180(8) 1440 degrees there u go
1440
1440 degrees
Add each side of the decagon, or all ten sides, to get the sum.
For any polygon, regular or otherwise, the sum of exterior angles is always 3600.
The interior angles of a ten sided decagon add up to 1440 degrees
1440
The exterior angles of any polygon add up to 360.
1440
1440 degrees
The sum of the measures of the exterior angles of any polygon, regular or irregular, is always 360 degrees. In a regular polygon with ten sides, each exterior angle measures 360 degrees divided by the number of sides, which in this case is 36 degrees. Therefore, the sum of the measures of the exterior angles of a regular decagon is 10 multiplied by 36 degrees, which equals 360 degrees.
Add each side of the decagon, or all ten sides, to get the sum.
The sum of the interior angles of any regular polygon of n sides is equal to 180(n - 2) degrees. 1440 degrees
The exterior angles of any polygon always add up to 360 degrees
If a dectagon is another word for a decagon then this is a 10 sided polygon. No matter how many sides it has, the sum of the external angles of a convex or regular polygon is 360°.
The sum of the exterior angles of ANY polygon, convex or concave, is 360 degrees.
The exterior angles of any polygon add up to 360 degrees including a 10 sided regular decagon of which each exterior angle will measure 360/10 = 36 degrees.
For any polygon, regular or otherwise, the sum of exterior angles is always 3600.