Question

please solve it ,plese

Answer 1

i.since the whole angle is 80 and the dotted lines are the symmetry means the half then
x=80÷2
=40

ii.since it is given the half angle is 55 then
x=55+55
=110

hope it helps u

Answer 2

x=55-15=40
x=40
x=40+55+15
110=x