Asequence of transformations that proves congruence between shape 1 and shape 2 by mapping shape 1 onto shape 2 is a reflection across the y-axis, followed by a
a. reflection across the x-axis
b. 90-degree clockwise rotation about the origin
c. 90-degree counterclockwise rotation about the origin
d. 180-degree rotation about the origin
and then a transition 1 unit down. alternatively, a sequence of transformations that proves congruence between shape 2 and shape 1 by mapping shape 2 onto shape 1 is a reflection of shape 2 about the x-axis followed by a
a. reflection across the y-axis
b. 90-degree clockwise rotation about the origin
c. 90-degree counterclockwise rotation about the origin
d. 180-degree rotation about the origin
and then a translation 1 unit left.