Both can have at least one right angle
A kite, arrowhead or an irregular quadrilateral are three possibilities.
The sum of angles in a quadrilateral is 360 degrees.
It is a square or a rectangle where each interior angle is a right angle of 90 degrees.
Each angle in a square is 90 therefore each angle is a right angle.
Each angle of a rectangle is a right angle. (90°)
It could be a trapezium or a kite.
Each angle in a rectangle is a right angle measuring 90°.
a right angle
A square.
A square.
A rectangle