Question 911628


given points A(0,0), B(2,-1) and C(-2,2), 



to find the distance from {{{B }}} to the midpoint of {{{AC}}} we need first to find the midpoint of {{{AC}}}


*[invoke midpoint 0, 0, -2, 2]



now  find the distance from {{{B }}} to the midpoint 


*[invoke distance_formula 2, -1, -1, 1]