1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Geometry help please!

  1. Sep 21, 2008 #1
    Given a line L with a coordinate system f, and three points A,B, and C with coordinates x, y, and z respectively. If A-B-C, then x-y-z.

    I was thinking that I could do it this way, but I'm not quite sure.

    If A<B<C, then


    because B-A>0.





    = C-A
    = xz

    so x-y-z.

    If C<B<A, it follows precisely similar argument that z-y-x, which means that x-y-z as before.

    Is this right? If not could you please help me?

    Thank you!!
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted