The formula to find the measure of an interior angle is [tex](n - 2) * 180/n[/tex], where [tex]n[/tex] represents the number of sides in the polygon. In this problem, [tex]n[/tex] would represent [tex]3[/tex].
Let's plug in the value for [tex]n[/tex]
[tex](3 - 2) * 180/3[/tex]
Let's simplify that.
[tex]=60[/tex]
Now we know that the measure of an interior angle of a regular three-sided polygon is 60°. Your answer would be B!
Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
