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?
exterior angle = 360° ÷ 20 sides = 18° interior angle = 180° - exterior angle = 180° - 18° = 162°
All I can tell you is that a 16 sided shape is called a Hexadecagon
Dooctahedron
Tetrahaidecahedron
Octadecadron
Exterior angle = 360/20=18 interior angle = 180 - 18 = 162 Must be regular shape
If it's regular then 360/20 = 18 degrees
A regular 18 sided polygon has 18 exterior angles each measuring 20 degrees
18 degrees
each angle= 20 degree
Each exterior angle will measure 360/18 = 20.0 degrees
56
The exterior angles add up to 360 degrees.
exterior angle = 360° ÷ 20 sides = 18° interior angle = 180° - exterior angle = 180° - 18° = 162°
20 degrees
20
20