In a triangle DEF;A, B and C are the mid points of RF, FD, and DE respectively. If the area of triangle DEF is 14.4cm square, then find the area of a triangle ABC
In a triangle DEF;A, B and C are the mid points of RF, FD, and DE respectively. If the area of triangle DEF is 14.4cm square, then find the area of a triangle ABC
the rectangle contained by the diagonals of a cyclic quadrilateral is equal to the sum of the rectangles contained by the opposite sides