Bridges and Special Angle Pairs

Can you move the lines so that the two angles are not equal?

Can you adjust the lines so that the two angles don't add up to 180?

Can you make any adjustment on the bridge so that the angle pairs are not equal?

Can you adjust the bridge so that the angle pairs do not equal 180?

What two conjectures (rules) can you make based on your observations today. ( Your answer should have two rules)