Math i don't know how to do this please help out only answer if you know please

Triangle dog was rotated to create triangle d'o'g'. describe the transformation using details and degrees. (10 points)

12 point are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr?

Which system of linear inequalities is graphed? can somebody pleasssse