0
( n x 180 ) - 360
where
n is the number of sides.
In other words,
take the number of sides or your polygon and multiply that by 180.
then, subtract 360 from that result.
that is your answer.
An octadecagon has 18 sides.
( 18 x 180 ) - 360 = 2880
The sum of the interior angles of an octadecagon is 2880 degrees.
Add your answer:
Earn +20 pts
What is the sum of the interior angles of an octadecagon?
360
What is the sum of the angles of a 14-gon?
Sum of exterior angles: 360 degrees Sum of interior angles: 2160
What is the sum of two complementary angles?
The sum of two complementary angles is 90 degrees. The sum of two supplementary angles is 180 degrees.
Sum of exterior angles of polygon?
The sum of the exterior angles of a polygon is 360o.
What are two angles whose measures have a sum of 90?
Two angles with a sum of 90 are called complimentary angles.
What is the sum of the interior angles of an octadecagon?
360
What is the sum of both angles 180?
If both angles are 180, their sum is 360!If both angles are 180, their sum is 360!If both angles are 180, their sum is 360!If both angles are 180, their sum is 360!
Sum of the angles of a 15- gon?
The exterior angles sum to 3600 , but the interior angles sum to 23400.
What is the sum of an angles on a octagon?
the sum of the angles is 1080
What is the sum of the angles of a 14-gon?
Sum of exterior angles: 360 degrees Sum of interior angles: 2160
The difference between complementary and supplementary angles?
Supplementary angles has the sum of the two angles that equal 180 degrees, while complementary angles have the sum of 90 degrees between two angles.Complementary angles sum to 90º, like 30º + 60º. Supplementary angles sum to 180º, like 45º and 135º.SUPPLEMENTARY ANGLES = the sum of the two angles are 180WHILECOMPLEMENTARY ANGLES= the sum of the two angles are 90
What is the sum of angles of 10 sided polygon?
Sum of exterior angles = 360 degrees Sum of interior angles = 1440 degrees
What is the sum of angles in a rhombus?
The sum of the interior angles is 360 and the sum of the exteriors is 360 also.
Sum of the angles in a trianlge?
The sum of the angles in a triangle is 180 degrees.
How many faces does a octadecagon?
An octadecagon is an 18 sided polygon.
What is the sum of two complementary angles?
The sum of two complementary angles is 90 degrees. The sum of two supplementary angles is 180 degrees.
What is the sum of the angles in a quardrilateral?
-- The sum of the four exterior angles is 360 degrees. -- The sum of the four interior angles is also 360 degrees. -- So the sum of all the interior and exterior angles is 720 degrees.
