Answer:
A. A parallelogram with a right angle is a rectangle.
Step-by-step explanation:
The correct answer is A. This is because:
A. A parallelogram is a quadrilateral with both sets of opposite sides parallel and equal to one another, also having opposite angles equal but none its angles as a right angle.
Hence, a parallelogram that has a right angle must have four right angles, and that is a rectangle.
B. This option is wrong because a rhombus does not have any of its angles as a right angle.
C. A trapezoid does not have two pairs of parallel sides.
Hence, this option is wrong because it has only one pair of parallel sides.
D. A square is a flat shape that has four (4) equal sides and equals angles. All its angles are right angles.
Hence, this option is wrong because the two pairs of opposite sides are parallel to one another.
