Icould really use some . given rectangle lmno, which statement accurately completes the proof that lmno is a parallelogram? angles mlo, nol, onm, and nml are congruent because lmno is a rectangle, and all rectangles have four right angles. the sum of the measures of angles mlo and nol is 180° because each angle is 90°. lm and no are parallel by the the sum of the measures of angles nml and mlo is 180° because each angle is 90°. lm and no are parallel by the lm is congruent to no and lo is congruent to mn by definition because lmno is a rectangle and opposite sides of a rectangle are congruent. rectangle lmno is a parallelogram because it contains two pairs of opposite sides that are congruent and parallel. alternate interior angles theorem corresponding angles theorem same side interior angle theorem vertical angle theorem