Question

find the coordinate of the fourth corner of the side of rectangle , three of whose corner are (-1,2), (4,2) ,( 3,5)

Answer 1

here midpoint of (-1,2) and ( 3,5) is (-1+3)/2 , (2+5)/2--> (1,7/2)
let the 4th point be (a,b)
then midpoint of (4,2) and (a,b) must be (1,7/2)

Answer 2

i.e
(4+a)/2=1 ---> a=-2
and
(2+b)/2= 7/2 --> b=5
hence the 4th cordinate may be (-2,5)

Answer 3

if u are able to plot on a graph paper it will clear ur doubts

Answer 4

thanks