Coplaner Parallel Lines

http://www.google.com/imgres?um=1&hl=en&biw=1280&bih=810&tbm=isch&tbnid=vkxjSrv9h7XgTM:&imgrefurl=http://www.wsdot.wa.gov/Projects/SR17/MosesLakePaving/Project%2BPhotos.htm&docid=mgzjetVH-dxU7M&imgurl=http://www.wsdot.wa.gov/NR/rdonlyres/14F7BADF-03F9-461B-BB47-D76E8C0C376D/0/Sidewalk510.jpg&w=509&h=382&ei=-CZ4UKHjI6P20gG2qIAw&zoom=1&iact=rc&dur=203&sig=104671425064691506674&page=1&tbnh=138&tbnw=184&start=0&ndsp=24&ved=1t:429,r:1,s:0,i:140&tx=128&ty=110                         

This is a sidewalk. This shows coplaner parallel lines because there are three lines on the same plane, that are parallel. This is used in the real world when people walk on it. I found this picture online.