a parallel.
http://wiki.answers.com/Q/What_is_the_definition_f...

Parallel lines (or line segments) are lines located on the same plane that never
http://www.chacha.com/question/whatareparallell...

A segment is a part or a piece of something larger. A line segment is a part of a line that connects two points, called endpoints. Like a line, a line segment is a onedimensional
http://www.ehow.com/info_8426869_linesegment.html

I think the answer to both questions is 0. Whatever the distribution of the size of any of the angles is, it is a continuous distribution. The probability that a continuous distribution
http://www.quora.com/Whatistheprobabilitythat...
