Answer:
<em>First selection: 2 pairs of parallel sides,</em>
<em>Second selection: only 1 corner needs to be a right angle</em>
Step-by-step explanation:
A parallelogram and rectangle both have * 2 pairs of parallel sides, * but to be a rectangle, * only 1 corner needs to be a right angle *
<em>~ Only 1 corner needs to be a right angle, because by properties of ║- grams, consecutive angles are supplementary, meaning the adjacent angle would be 90° as well. The angle adjacent to the adjacent angle would also be 90 degrees by the same rule, as well as the other adjacent angle to the one we were reffering to in the start. </em><em>All in all, if 1 corner is a right angle, all 4 corners are right angles and this ║- gram is thus a rectangle</em><em> ~</em>
