Question 99337
midpoint of AC on a parrallogram A(1,5) C(7,-7) B(8,-2) O(0,0)

midpoint = {{{(X1+X2)/(2)}}},{{{(Y1+Y2)/(2)}}}
midpoint = {{{(1+7)/2}}},{{{(5+-7)/2}}}
midpoint = {{{8/2}}},{{{-2/2}}}
midpoint = 4,-1
:)