If angle 4 = 100, what is angle 6?

Answer: 100
Step-by-step explanation:
Because the two horizontal lines are parallel and diagonal splits them, 4 and 6 are congruent so they have the same angle.
4, 2, 8 and 6 all have the same angles.
1, 3, 5 and 7 all have the same angles as well.