18. FIND THE ERROR Shanice is looking at the figure shown, which shows
two congruent triangles. She sees that A' coincides with A and decides
that A is the center of rotation. She measures the angle that rotates B
to B' about A and finds it to be 30°. She then claims that because the
two triangles are congruent, a 30° rotation has occurred about A. Is
Shanice correct? Explain your reasoning.
