equal parts. . Find the area of a rhombus if its vertices are ( , ), ( , ), (– , ) and (– , – ) taken in order. [ Hint : Area of a rhombus = (product of its diagonals)] Fig.
. . Summary In this chapter, you have studied the following points : . The distance between P( x , y ) and Q( x , y ) is ( ) ( ) .
. The distance of a point P( x , y ) from the origin is . . The coordinates of the point P( x , y ) which divides the line segment joining the points A( x , y ) and B( x , y ) internally in the ratio m : m are .
The mid-point of the line segment joining the points P( x , y ) and Q( x , y ) is .