- ACorrect, because a rectangle has both pairs of opposite sides parallel, while a parallelogram need not have 90° angles
- BWrong, because rectangles are not parallelograms
- CWrong, because all parallelograms are rectangles
- DCorrect, because both shapes have all four sides equal
Step-by-Step Solution
A rectangle satisfies the parallelogram condition (opposite sides parallel), but a parallelogram lacks the 90° requirement.
Answer: A) Correct, because a rectangle has both pairs of opposite sides parallel, while a parallelogram need not have 90° angles