Answer:
See explanation
Step-by-step explanation:
Definitions of parallelogram and rectangle:
A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel.
A rectangle is a parallelogram with four right angles.
This gives us that each rectangle is a parallelogram.
But an arbitrary parallelogram can have angles that are not necessarily right (for example, 60°, 120°, 60°, 120°). Thus, there are a lot of parallelograms that are not rectangles.
