1,) angle 3 is equal to angle
2.) angle 2 is equal to angle
3.) angle 7 is equal to angle
4.) angle 6 is equal to angle

Step-by-step explanation:

Notice that we have to pair of non-parallels lines and a transversal.

Also, you can observe in the image angles 3 and 5, 2 and 8, 7 and 1, 6 and 4, all of these pairs are vertical angles, which means they are congruent by definition.

Therefore, the congruence of each pair are:

answer: i think it is (1,-2)