Question

prove:
\\( \angle r m s=\angle s n r \\)

which of the following is the reason for line 2 in the proof?
reflexive
symmetric
substitution

Explanation:

The reflexive property of equality states that any quantity is equal to itself. In line 2, \(RS = RS\) is an example of this property. The symmetric property states that if \(a = b\), then \(b = a\). The substitution property is used when substituting one quantity for another equal quantity. Since \(RS = RS\) is just a quantity being equal to itself, it's the reflexive property.

Answer:

reflexive