![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
\
Minimum two points in space are required to form a line.
\The line can be named as line n.
\Observe the figure; there three points on the line n, so any two of the points can
\be used to name the line.
\The line containing point B can be named as ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=85294a007df685548851d9f4b7f50d41.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
\ \
\
The line can be named as line n.
\The line containing point B can be named as![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=85294a007df685548851d9f4b7f50d41.png\")
.