No because a quadrilateral has 4 sides but doesn't have to have right angles. For example the. Trapezoid doesn't,t have right angles but it is a quadrilateral
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no,all quadrilaterals have 4 right angles
No.
No, only squares and rectangles have 4 right angles.
No, one example is a kite that DOES NOT have two right angles. It is not a cyclic quadrilateral. A kite that does have two right angles is one.
The two quadrilaterals that have four right angles are rectangles and squares.