Answer:
We know that in a octagon
numbers of sides=5
Let
value of each exterior angles =x
The sum of exterior angles=360°
[tex]{:}\leadsto [/tex][tex]\sf 5x=360 [/tex]
[tex]{:}\leadsto [/tex][tex]\sf x={\dfrac {360}{5}}[/tex]
[tex]{:}\leadsto [/tex][tex]\sf x=72°[/tex]
[tex]\therefore[/tex]Measure of each exterior angle of a octagon is 72°.