Solution
The theorem by which 2 and 7 are congruent is the…
Given : parallel lines
To find; theorem by <2 = <7
[tex]\begin{gathered} <2=<7 \\ by\text{ theorem} \\ The\text{ pairs of the exterior angles are equal} \end{gathered}[/tex]
Therefore the alternate exterior angle theorem is the correct choice
Hence the theorem by which 2 and 7 are congruent is the… Alternate exterior Angle theorem
