Coordinates

Question

(i)The end points of a diagonal of a square is (4,9) and (2,3) find the others .
(ii) Middle point of the medians of a triangle are (1,2), (4,4) and (2,8). find the area of triangle.

Answer 1

Draw a diagram.

Diagonals of a square are mutually perpendicular bisectors

The the point of intersection is (3, 6), Look at your diagram.

The other diagonal is perpendicular at this point and bisected by it

Determine the end points.