0
The sum of the internal angles in a polygon is equal to (n - 2) x 180 degrees. In this case, the sum of the internal angles in an icosagon (a 20-sided polygon is called an icosagon, from the Greek word ikosi meaning 20), is equal to (20 - 2) x 180 = 18 x 180 = 3240 degrees.
Add your answer:
Earn +20 pts
What is the sum of the angles of a regular 9- gon?
Exterior angles are 360 degrees Interior angles are 1260 degrees
What is the sum of the exterior angles of this regular hexagon?
The sum of the exterior angles of any polygon is 360 degrees.
What are the total number of degrees of all the interior angles of a regular octagon?
The sum of all the interior angles of a regular octagon is 360 degrees.
How many sides would a regular polygon have if the sum of exterior angles were 1980 degrees?
The sum of the exterior angles cannot be 1980 degrees - it is always 360 degrees.
What is the sum of the measures of the interior angles of a regular hexagon?
It is 720 degrees.
What is the sum of the interior angles in the regular octagon?
360 degrees * * * * * No, that is the sum of the Exterior angles. The sum of the interior angles is 180*(8 - 2) = 180*6 = 1080 degrees.
What is the sum of the angles of a regular 9- gon?
Exterior angles are 360 degrees Interior angles are 1260 degrees
What is the sum of the exterior angles of this regular hexagon?
The sum of the exterior angles of any polygon is 360 degrees.
What is the angle sum of a regular pentagon?
The sum of the interior angles add up to 540 degrees. The sum of the exterior angles add up to 360 degrees.
What is the sum of the interior angles of a regular decagon?
1440 degrees. The sum of the interior angles of any regular polygon of n sides is equal to 180(n - 2) degrees.
What is the sum of the angles of a regular 9 gon?
1260 degrees
What is the sum of the internal angles of a regular quadilateral?
360 degrees.
What are the total number of degrees of all the interior angles of a regular octagon?
The sum of all the interior angles of a regular octagon is 360 degrees.
How many sides would a regular polygon have if the sum of exterior angles were 1980 degrees?
The sum of the exterior angles cannot be 1980 degrees - it is always 360 degrees.
How do you work out the sum of exterior angles for a pentagon?
all regular polygons (such as a pentagon) have the sum of their exterior angles = 360 degrees
A Find the sum of the interior angles of a regular 20-gon?
The sum of the interior angles add up to 3240 degrees.
What is the sum of the interior angles of a regular triangle?
It's 180 degrees for any triangle, regular or not.
