Question

How do I finna angle N?

Answer 1

Recall that the sum of all interior angles in a triangle is 180°, therefore F + U + N = 180°, and thus

$\bf \stackrel{F}{(x+21)}~~+~~\stackrel{U}{(x+23)}~~+~~\stackrel{N}{(x+61)}~~=~~180 \\\\\\ 3x+105=180\implies 3x=75\implies x=\cfrac{75}{3}\implies x=25\\\\ -------------------------------\\\\ \measuredangle N=(25)+61$