Parallel lines jokes
What do maths and 9/11 have in common?
They both prove two parallel lines can be intercepted by a plane.
Parallel lines have so much in common, it’s a shame they’ll never meet.
quit comical
What is the similarity between math and buildings?
Two parallel lines can be intersected by a plane.
What's one thing gay people can't draw?
A straight line.
Isn't it strange that the LGBTQ flag only has straight lines?
I saw identical twins. I threw a paper plane at them.