Yup; as long as the opposing sides are parallel -- it can be a parallelogram. Technically, a rectangle is a parallelogram too.
True
All rectangles are quadrilaterals. A quadrilateral has 4 sides; all rectangles have 4 sides; thus all rectangles are quadrilaterals.
yes, it is true
It is NOT as case of 'Some'. It is ALL rectangles are parallelograms.
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