Question 536189
Given the end points
(x1,y1) and (x2,y2)
The length of the line segment is:
{{{ sqrt( (x[2] - x[1])^2 + ( y[2] - y[1] )^2 )) }}}
( 1,-4 ) and (9,2 )
{{{ sqrt( ( 9 -1 )^2 + ( 2 -(-4))^2 ) }}}
{{{ sqrt( 8^2 + 6^2 ) }}}
{{{ sqrt( 64 + 36 ) }}}
{{{ sqrt( 100 ) }}}
length = 10