\
Observe the figure; the points C, J and B are on the same line, so these points are
collinear.
The points C, J and B are collinear.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")