In each diagram, line x is parallel to line y, and line z intersects lines x and y. Based on the diagrams, which statement is true about the value of a? The value of a is 127o because 180o – 53o = 127o. The value of a is 53o because a is adjacent to an angle that is 53o. The value of a is 37o because 90o – 53o = 37o. The value of a is 180o because 53o +127o = 180o.