Help me please!

I cannot figure out how to do this, since I can't find anything similar looking back at my notes, and from notes before.

This is the question!

Write the first step of an indirect proof.

Points J, K, and L are collinear.

and here is all I have so far.

Assume temporarily that Points J, K, and L are not Collinear. Assume Point J is Non-Collinear.

I'm just having a hard time trying to prove they are collinear.

I tried putting this in Geometry but no one responded

Question

Help me please! 

I cannot figure out how to do this, since I can't find anything similar looking back at my notes, and from notes before.

This is the question!

Write the first step of an indirect proof.

Points J, K, and L are collinear.    

and here is all I have so far.

Assume temporarily that Points J, K, and L are not Collinear. Assume Point J is Non-Collinear.

I'm just having a hard time trying to prove they are collinear.

I tried putting this in Geometry but no one responded

welshfella · Answer

http://www.math-only-math.com/condition-of-collinearity-of-three-points.html Try this.

mynameishi · Answer

@welshfella This really helped me understand it more! Thank you! I know how to write the indirect proof now!

welshfella · Answer

good 
yw