In fact, some are rectangles, but not all are.
True
Yes it's true.
Yes, all rectangles are parallelograms. However, not all parallelograms are rectangles.
All parallelograms are not rectangles. The angles of a parallelogram need not be right angles and so the figure need not be a rectangle.
In fact, some are rectangles, but not all are.
True
yes, it is true
yes. rectangles are just the special cases of parallelograms where the angles are all 900
True when they are in the form of rectangles.
No. All rectangles are parallelograms, specifically those with two pair of parallel sides and all right angles.
not true
All rectangles are parallelograms, so yes there are some.
True
All rectangles are parallelograms.
true
No. Only some parallelograms are rectangles. But all rectangles are parallelograms.