Suppose angle abc = 30°. if angle abc is bisected, what would each of the new angles measure?

How do you use the elimination method for this question? explain, because i really want to understand!

Give me the equations of two lines that have the same slope but are not parallel.

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅