Do angles on parallel lines with a line through the both have these rules
If the angel is on the same side of the parallel line and the line that goes through for both the top and bottom
As Seen in 1
Then it has the same angle amount
If the angle is positioned like in 2
The angels are equal to 180
If the angle is positioned like in 2
The angels are equal to 180
If the angle is positioned like in 2
The angels are equal to 180