Answer:
angle four equals angle 7 because they are alternate angles in a way.
Step-by-step explanation:
First if you go diagonally up from angle 4, you get angle 5. Then you go diagonally down. That angle isn't marked so I'll call it Z. But you could do it a faster way. You see, you could replace angle 4 with angle Z and vice versa. Then angle Z is the alternate angle of angle 7. One rule you should remember:
Alternate angles are equal.
Does this help? If it doesn't make sense let me know. (When I was learning this, it didn't make sense either)
