Is any rectangle a square?

A rectangle is a rectangle with all angles of 90 degrees.

A square is a rectangle in which all angles are 90 degrees and all sides are equal.

Therefore, not every rectangle can be a square, but every square is always a rectangle.

For example: a quadrilateral, which has all angles of 90 degrees, and opposite sides, respectively, 10 centimeters and 15 centimeters, is a rectangle, and a quadrilateral, which has all angles of 90 degrees and all sides of 10 centimeters, is a square.



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