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So, the Sum of the interior angles for a 21 – sided polygon is equal to 3420°.
What else can I help you with?
What is each interior angle of a regular polygon with 21 sides?
Each exterior angle is 360/21 = 17.1429 deg so each interior angle is 180 - exterior angle = 162.8571 degrees.
What is the Sum of interior and exterior angle at the vertex of a polygon?
The sum of the interior angles of a polygon with n sides is 180(n-2). Here is my explanation about it.http://math4allages.wordpress.com/2009/10/21/angle-sum/
What is the sum of the interior angle measures of a 21-sided polygon?
The sum of the interior angles of a polygon is 2n - 4 right angles where n is the number of sides. When n = 21 then 2n - 4 = 42 - 4 = 38 right angles = 38 x 90 = 3420°. NOTE : If the polygon is a regular polygon then each interior angle measures 3420 ÷ 21 = 162.86°.
How many sides does a polygon have if the sum of the interior angles is 3420?
It will have: (3420+360)/180 = 21 sides
21 sided polygon?
An icosikaihena is a polygon with 21 sides
A polygon with twentyone sides?
A polygon with 21 sides is called an Icosagon.
What type of polygon has the sum interior angles of 3420?
The sum of angles of a regular polygon: (n - 2)180 = 3,420 180n - 360 = 3,420 add 360 to both sides; 180n = 3,780 divide both sides by 180; n = 21 Thus a 21-side regular polygon has the sum of interior angles 3,420 degrees.
What is the sum of the interior angles of a polygon with 21 sides?
(n-2)*180 degrees where n is the number of sides. In this case, n = 21 so 19*180 = 3420 degrees.
What is the sum of the interior angles of a 21 gon?
The sum of the interior angles of any regular polygon of n sides is equal to 180(n - 2) degrees. 3420 degrees
What polygon has 21 sides?
icosihenagon
Name of polygon with 21 sides?
icosikaihenagon
What is the name of a polygon that has 3420 degrees in it?
It will have 21 sides or a 21-gon
