Question 842567
Length = {{{sqrt( (x2-x1)^2 + (y2-y1) )}}}
For our problem x1=23 , x2=-2 , y1=4 and y2=16
So the length is
{{{sqrt( ((-2)-(23))^2 + ((16)-(4)) )}}}
{{{sqrt( (-25)^2 + (12)^2)}}}
{{{sqrt( 625 + 144 )}}}
{{{sqrt( 769)}}} , approximately 27.731
Midpoint = ({{{ (x1+x2)/2}}} , {{{ (y1+y2)/2 }}})
Midpoint = ({{{ (23+(-2))/2}}} , {{{ (4+16)/2 }}})
Midpoint = ({{{ (21)/2}}} , {{{ (20)/2 }}})
Midpoint = ({{{ 10.5}}} , {{{ 10 }}})