Astatement and portions of the flowchart proof of the statement are shown. which statement should appear in the box labeled 1?
angle congruence postulate
substitution property of equality
linear pair postulate
ruler postulate angle

"Linear Pair Postulate" is the one statement among the following choices given in the question that should appear in the box labeled 1. The correct option among all the options that are given in the question is the third option or the penultimate option. i think you forgot to add the picture. I have answered the question based on my knowledge and research.

Substitution Property of Equality

Step-by-step explanation: I just took the test