True
All rectangles are quadrilaterals. A quadrilateral has 4 sides; all rectangles have 4 sides; thus all rectangles are quadrilaterals.
yes, it is true
In fact, some are rectangles, but not all are.
yes. rectangles are just the special cases of parallelograms where the angles are all 900
Yes.
True when they are in the form of rectangles.
True. All squares are rectangles, but not all rectangles are squares.
False
All rectangles are parallelograms.
No. All rectangles are parallelograms, specifically those with two pair of parallel sides and all right angles.
not true