Step-by-step explanation:
The exterior angle of a polygon is given by
360/n
where n is the number of sides
First figure
For the first shape it has five sides
That's it's a pentagon
The measure of one exterior angle of the shape is
360 / 5
= 72°
Second figure
For the second shape it has 8 sides that's it's an octagon
So the measure of one exterior angle of the shape is
360 / 8
= 45°
Hope this helps you
