The angle measures of quadrilateral rstu are shown. m∠r = (2x)° m∠s = (3x – 35)° m∠t = (x + 35)° the measure of angle u is unknown. can quadrilateral rstu be a parallelogram? yes, opposite angles r and t are congruent to each other if x = 35. yes, consecutive angles r and s are congruent to each other if x = 35. no, if x = 35, all three given angles measure 70°. the fourth angle would measure 150°. no, if x = 35, the three given angle measures make it impossible for the figure to be a quadrilateral.