Pentagon abcde is rotated 180° clockwise about the origin to form pentagon a′b′c′d′e′. which statement is true? a) pentagon abcde is congruent to pentagon a′b′c′d′e′. b) the sum of the angle measures of pentagon a′b′c′d′e′ is 180° more than the sum of the angle measures of pentagon abcde. c) each side length of pentagon a′b′c′d′e′ is 2 times the corresponding side length of pentagon abcde. d) each side length of pentagon a′b′c′d′e′ is 1 2 the corresponding side length of pentagon abcde.