What is the name of the shape that has 12 degrees as its exterior angle?

The shape with an exterior angle of 12 degrees is a dodecagon, which is a polygon with 12 sides. The exterior angle of a regular polygon can be calculated using the formula (360/n), where (n) is the number of sides. For a dodecagon, (360/12 = 30) degrees for each interior angle, which corresponds to 12 degrees for the exterior angle. Thus, the shape is indeed a dodecagon.