Definition of the Parallel lines

 

Two lines on the plane are called parallel if they do nor intersect.

 

Parallel lines are designated by the sign ׀׀

a ׀׀ b reads as line а is parallel to line b.

Definition of the Parallel lines

a and b are Parallel lines

Definition of the Parallel segments

 

Two segments are called parallel if they lie on parallel lines:

a ׀׀ b therefore, АВ ׀׀ СD.

Definition of the Parallel segments

АВ and СD are Parallel segments

Line q is not parallel to lines a and b, consequently, segment MN lying on this line is not parallel to segments CD and АВ.

MN lying on this line is not parallel to segments CD and АВ

MN is not parallel to segments CD and АВ