Write your own road problem with 2 or 3 lengths

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

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

∆red ≅ ∆ by rule will give brainiest if possible