Respuesta :

Answer:

Transitive property is used in step 4.

Step-by-step explanation:

Transitive property states that if

[tex]a = b \\b = c\\ then\\a = c[/tex]

Here we have

[tex]\angle 5 \cong \angle 1\\\angle 1 \cong \angle 3\\then\\\angle 3 \cong \angle 5[/tex]