Register to reply 
Proofs will parallel lines 
Share this thread: 
#1
Sep2506, 06:12 PM

P: 59

I need to prove that <acb is equal to one of the other interior angles of triangle abc.
help when pic uploads 


#2
Sep2606, 04:58 AM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,510

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? 


Register to reply 
Related Discussions  
Derivatives and parallel lines  Calculus & Beyond Homework  4  
Parallel Lines  Precalculus Mathematics Homework  2  
Two parallel lines meet?!  General Math  5  
Curves and parallel lines  Introductory Physics Homework  5  
Definition of Parallel Lines  General Math  24 