No, not all quadrilaterals are rectangles. Quadrilaterals are any shapes that have four angles and sides. While not all quadrilaterals are rectangles, all rectangles have to be quadrilaterals.
No, but a rectangle is in the family of 4 sided quadrilaterals
No. A quadrilateral is a rectangle only if its angles are all equal.
no
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No they are not. A kite, for example, is a quadrilateral but it is certainly not a rectangle.
parallelograms and,or quadrilaterals
The quadrilaterals with all angles congruent are rectangles and squares. They are the only quadrilaterals in which all four angles are right angles.
Rectangles
the three special quadrilaterals that can be a parallelogram are a rectangle, a square, and a rhombus Actually, this is incorrect. All squares are rectangles. All rectangles are parallelograms. Therefore all squares are parallelograms. But not all parallelograms are rectangles. And not all rectangles are squares.
A square for example.