Answer:
Linear pair ∠1 &∠2, Vertical angles ∠2&∠4, Supplementary angles ∠3&∠4,
Explanation:
Taking n as transversal on line l and m
linear pairs angles are supplementary angles that form a straight line (180 degrees)
∠1 &∠2, ∠3&∠4, ∠5&∠6, ∠7&∠8
Vertical angles are opposite angles. they are congruent
∠2&∠4, ∠1&∠3, ∠6&∠8, ∠5 &∠7
Supplementary angles are angles that form a straight line that is sum up to 180 degrees
∠1 &∠2, ∠3&∠4, ∠5&∠6, ∠7&∠8