Find the measure of the exterior angle

Can you draw an isosceles triangle with only one 80 degree angle?

Tell me how you got the it use the figures to answer questions 1and 2. in each diagram, line k is parallel to line l, and line t intersects lines. 1. based on the diagrams, what is the value of x? 2. how would you verify your answer for x?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer