b. The adjacent angles formed by two intersecting lines are supplementary.
<h2>Step-by-step explanation:</h2>
Clearly from the figure that is given to us we could see that we are given measures of the adjacent angles (i.e. the angle that have a common vertex and a common side)
Hence, also by the given measures we have:
135°+45°=180°.
160°+20°=180°
130°+50°=180°
This means that the adjacent angles formed by two intersecting lines are supplementary ( since the sum of the two angles is 180°)