Question

Find the missing angle

Answer 1

A triangle is always equals to 180 so you have to do:
40+30=70
180-70=110
F=110°

Answer 2

110 Degrees

Explanation:

Every interior triangle equalls 180 degress. So you subtract what you already have from 180.

30+40+x=180

70+x=180

180-70=110