PLEASE HELP ME I AM VERY STUCK WILL MARK BRAINLIEST

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

Graph the system of equations on your graph paper to answer the question. {y=−x+4y=x−2 what is the solution for the system of equations? enter your answer in the boxes.