Posted by TJ on Wednesday, October 7, 2009 at 8:41pm.
AB "union" AC, is a line, what is true about A,B and C

Geometry  MathMate, Wednesday, October 7, 2009 at 9:14pm
What is AB and AC a segment?
If that is the case, then A, B and C are points, and AB is lined up with AC into a straight line.
What can you say about A, B and C if they are all lined up to form a straight line?