Sides, yes. Sizes? What is a straight size?
Parallelograms belong to the family of quadrilaterals, the Four Sided Family.
All parallelograms are quadrilaterals, though not all quadrilaterals are parallelograms. Both have 4 sides and 4 corners. A quadrilateral can have sides and corners of different sizes, whereas a parallelogram must have opposite sides that are parallel.
All squares are parallelograms, but all parallelograms are not squares.
No trapezoids are parallelograms, and no parallelograms are trapezoids.
No trapezoids are parallelograms, and no parallelograms are trapezoids.
No but all parallelograms are trapezoids
No, but all parallelograms are trapezoids.
No. All rhombi (rhombuses) are parallelograms but all parallelograms are not rhombi.
By definition, all squares are parallelograms. Not all parallelograms, however, are squares. All rectangles and rhombuses are also parallelograms.
No trapezoids are parallelograms, and no parallelograms are trapezoids.
It is NOT as case of 'Some'. It is ALL rectangles are parallelograms.
No. Parallelograms are never trapezoids. Trapezoids are never parallelograms.