Which transformation will always map a parallelogram onto itself? A. a 90° rotation about its center
B. a reflection across one of its diagonals
C. a 180° rotation about its center
D. a reflection across a line joining the midpoints of opposite sides

the answer is c hope it

step-by-step explanation:

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540