1)Which angles appear to be equal in measure to angle 1? 2) which angles appear to be equal in measure to angle 2?
3) which pairs of angles appear to form a linear pair?
4) If lines m and n were moved so they were no longer parallel, wound any of your answers to the previous questions change?

-6 is the correct option from the above given options

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.