# Thread: Is it possible to draw a parallel line only using a ruler

1. ## Is it possible to draw a parallel line only using a ruler

There are three points $A , B , C$ , they are not collinear .

Can we draw a straight line which passes through $A$ and is parallel to line $BC$ using a rule without a scale ?

Is it possible ? .. I don't think it is . There is a big limitation !

2. Originally Posted by simplependulum
There are three points $A , B , C$ , they are not collinear .

Can we draw a straight line which passes through $A$ and is parallel to line $BC$ using a rule without a scale ?

Is it possible ? .. I don't think it is . There is a big limitation !
Are you using a ruler with measurements or just a straight edge?

3. Originally Posted by Prove It
Are you using a ruler with measurements or just a straight edge?
Just a straight edge for us to draw straight lines .

4. Yes by using the angle at the top or bottom of your ruler.