Got it wrong on the test and cnt figure it out

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

Give me the equations of two lines that have the same slope but are not parallel.