For what value of x is line m parallel to line n? enter your answer in the box. x = line m is parallel to line n. line m is above line n. a transversal line cuts both parallel lines. the acute upward left angle made by the transversal line with line m is labeled as 75 degrees. the obtuse downward left angle made by the transversal line with line m is labeled as 105 degrees. the obtuse upward right angle made by the transversal line with line n is labeled as left parenthesis 10 x plus 15 right parenthesis degrees.