Assume that lines jl and Mo are parallel

Name a pair of alternate interior angles

There are two possible pairs of alternate interior angles:

1) Angle j and angle o
2) Angle l and angle M

When lines jl and Mo are parallel, a pair of alternate interior angles can be named as follows:

1. Angle 1: It is formed by line j and line Mo on opposite sides of line jl.
2. Angle 2: It is formed by line l and line Mo on opposite sides of line jl.

Therefore, Angle 1 and Angle 2 are a pair of alternate interior angles when lines jl and Mo are parallel.