May 27, 2015 #2 Simon Bridge Science Advisor Homework Helper 17,871 1,661 Welcome to PF; ... to answer your question, 1st write down the definition of "parallel".
May 27, 2015 #3 micromass Staff Emeritus Science Advisor Homework Helper Insights Author 22,169 3,325 Ajit Kumar said: Can a line be parallel to itself? Yes, every line is parallel to itself.