No because a 4 sided rectangle also has four right angles
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A four-sided polygon with all sides congruent and with four right angles is a square.
rectangle, square
A four-sided polygon with four right angles is a rectangle. If the four sides are congruent, it is a special case of a rectangle called a square.
A square is a plane rectangle with four equal sides and four right angles, a four-sided regular polygon, and a rhombus having four right angles.
A four-sided polygon with four congruent sides and four equal angles is a square