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360° = 72° 216o is a multiple of 72

The angle of rotation will carry the figure onto itself is 216 degrees

The measure of angle at the center of the polygon is 360 degrees. i.e.

[tex]\theta = 360^o[/tex]

The number of sides of the regular polygon is 5. i.e.

[tex]n = 5[/tex]

So, the smallest angle of rotation that maps the polygon onto itself is

[tex] = \frac{\theta}{n}[/tex]

This gives

[tex]\alpha = \frac{360}{5}[/tex]

[tex]\alpha = 72[/tex]

Other angles that map the shape onto itself, must be a multiple of 72. i.e.

[tex]\alpha = 72, 144, 216,288,360....[/tex]

Hence, the angle of rotation will carry the figure onto itself is 216 degrees

Read more about regular polygons at:

https://brainly.com/question/1592456