Some parallelograms are rectangles; all rectangles are parallelograms.
All normal rectangles, are parallelograms.
Yes, thet's true. Rectangles are special kinds of parallelograms. So all rectangles are parallelograms, but there are other parallelograms that are not rectangles.
All rectangles are parallelograms, so yes there are some.
No. Only some parallelograms are rectangles. But all rectangles are parallelograms.
Yes. All rectangles are also parallelograms, but not all parallelograms are rectangles.
In fact, some are rectangles, but not all are.
By definition, all squares are parallelograms. Not all parallelograms, however, are squares. All rectangles and rhombuses are also parallelograms.
All of them are.