Question

http://prntscr.com/6esnla

Answer 1

right @Jamierox4ev3r

Answer 2

yes

Answer 3

kk thx

Answer 4

\(\large\color{black}{ \displaystyle \color{forestgreen}{\angle 1}=\color{forestgreen}{\angle 12} }\)

Answer 5

and in fact, (continuing this pattern for infinite parallel lines)
\(\large\color{black}{ \displaystyle \color{blue}{\angle (1+4n)=\angle (4n)=55^{\circ}} }\)
\(\large\color{black}{ \displaystyle \color{blue}{\angle (4n-2)=\angle (3+4n)=(180-55)^{\circ}} }\)

Answer 6

but provided that \(\large\color{black}{ \displaystyle \left\{n{\tiny ~}{\bf :}~n\ge0,n\in{\bf Z} \right\} }\)

Answer 7

saying: 'n' is an integer that is 0 or greater.
(whole numbers don't have a separate notation, sorry mathematicians)