1. Not finding help here? Sign up for a free 30min 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!

Proofs will parallel lines

  1. Sep 25, 2006 #1
    I need to prove that <acb is equal to one of the other interior angles of triangle abc.

    help when pic uploads
     

    Attached Files:

  2. jcsd
  3. Sep 26, 2006 #2

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    What do you know about the size of an exterior angle relative to the size of the other two angles in the interior?
    If CZ, the bisector of that angle, is parallel to AB, what does that tell you about angles BAC and ACZ?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Similar Discussions: Proofs will parallel lines
  1. Tangent lines parallel (Replies: 1)

Loading...