First ABC is reflected across the y axis to become A'B'C'
Then A'B'C' is rotated 90 counterclockwise about the origin to make it A"B"C"
Because the transformations are both rigid, the pre-image and image are congruent
Hope this helped
it is false because a sphere is basically a three- dimensional circle. It is a polyhedron.
Answer in the attachment.
X=3,-1 your answer is right here