Introduction to the triangle midsegment theorem‼️can someone me with this problem ❓

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Suppose you are going to graph the data in the table. minutes temperature (°c) 0 -2 1 1 2 3 3 4 4 5 5 -4 6 2 7 -3 what data should be represented on each axis, and what should the axis increments be? x-axis: minutes in increments of 1; y-axis: temperature in increments of 5 x-axis: temperature in increments of 5; y-axis: minutes in increments of 1 x-axis: minutes in increments of 1; y-axis: temperature in increments of 1 x-axis: temperature in increments of 1; y-axis: minutes in increments of 5

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?