Extra points
if m is perpendicular to n and answer!

I've answerd the same question here:

" m | | n" means they are paralell, like the lines between m and n
" n ⊥ p" means they are perpendicular, like the lines between n and p

it would help to draw a picture
draw any 2 paralell lines and call them m and n
then draw a line perpendicular to n and call it p
you then get the drawing below
so therfor p is perpendicular to m
so pick the option "m ⊥ p"

It is 5.8 you add all of the up to equat 180 then solve the equation