A regular 18 sided polygon has 18 exterior angles each measuring 20 degrees
To work out the interior angle use this formula(n - 2)*180/nwhere n is the number of sidesso for an 18 sided shape it would be(18-2)*180/18 = 160.
The question can be answered only if the 20-gon is regular - ie all its angles are the same. IF that is the case, then: The sum of the exterior angles of any polygon is 360 degrees. Since there are 20 exterior angles, each of them must be 360/20 = 18 degrees.
20 degrees and the two equal angles will be 80 degrees each
Any triangle that has an angle measuring 90 degrees is a right triangle.
20 degrees. the definition of a supplementary angle is two angles that add up to 180 degrees.
If it's regular then 360/20 = 18 degrees
The exterior angle of a 18 sided shape is 360/18 =20 degrees The exterior angle is always 360 divided by the numbe of sides of that polygon. =) what the hell im i doing answering this?
The exterior angle of a regular polygon can be calculated using the formula ( \frac{360^\circ}{n} ), where ( n ) is the number of sides. For a regular 20-sided shape (icosagon), the exterior angle is ( \frac{360^\circ}{20} = 18^\circ ). Therefore, each exterior angle of a regular 20-sided shape measures 18 degrees.
Each exterior angle measures 20 degrees Each interior angle measures 160 degrees
Well, honey, an exterior angle of a polygon can be found by dividing 360 degrees by the number of sides. So for a 20-gon, each exterior angle would be 18 degrees. It's as simple as that, darling.
It is: 160 degrees
18 degrees
If it is a regular polygon then each exterior angle is 360/20 = 18 degrees
Exterior angle measures 18 degrees Interior angle measures 162 degrees
20 degrees
Exterior angle = 20 degrees Interior angle = 160 degrees
The sum of the exterior angles of any (closed) shape will always be 360 degrees. The exterior angles of any polygon always add up to 360 degrees * * * * * The second of the above two answers is more accurate. A closed shape can be a circle, which does not have exterior angles.