Triangle ABC is a scalene and obtuse triangle. Using a certain theorem (which you should state), prove that A and B and C are points that fall on the same line. *funny funny*
The vertices of a triangle are, by definition, noncollinear; therefore, you cannot prove that they are collinear.
wbout the big point theorem :( make the points really big, and they are on the same line. :) especially when you draw a diagram