Ex 8.1,Q No 8,ABCD is a rectangle in which dia AC bisects A as well as C. Show that ABCD is a square

Ex 8.1,Q No 8, ABCD is a rectangle in which diagonal AC bisects angle A as well as angle C. Show that 1) ABCD is a square, 2) diagonal BD bisects angle B as well as angle D. class 9 , Quadrilaterals.