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## Geometry (all content)

### Course: Geometry (all content)>Unit 1

Lesson 3: Parallel and perpendicular

# Drawing parallel line segments

Sal draws parallel line segments with given points. Created by Sal Khan.

## Want to join the conversation?

• When does a line truly end? When it goes off the paper?
• Lines never end unless they are line segments or rays, which are different from lines. Line segments end from both ends while rays continue from one end forever.
• why does math exist?
• Math is important because it is everything related to counting including time, if math didn't exist we wouldn't be able to tell time, use currency, or even make electronics because all of those things have relation to math. Without math, our species might still be unimportant and not even close to where we are today.
• How do you get the next Aqualine avatar? And what qualifies as mastering a math skill? Do you have to watch all the videos for it to count?
• I got mine by mastering the exercises. A skill is mastered by earning the crown on top.
• I heard that two parallel lines intercepts itselves in the infinity. Is that true? Why?
• As mentioned by Robin, if they are parallel lines then they would never intercept at any point. They share the same slope or rise/run.
• is it fun making videos
• It depends. If you want to make a video fun, do it on something you enjoy.
(1 vote)
• why does every time that i see a question it says IF YOU UPVOTE YOU WILL WIN 1,000 DOLLARS SO PLS UPVOTE ME PLS JUST UPVOTE ME
• i don't get when you say like two endpoints and like zero direction.