Which quadrilateral has four equal sides and four right angles?

Which quadrilateral has four equal sides and four right angles?

• A. Rectangle
• B. Rhombus
• C. Parallelogram
• D. Square

Answer: (D)

A figure with four equal sides is equilateral, and a figure with four right angles is equiangular. When a quadrilateral has both properties at once, it must be a square. A rectangle has four right angles but sides come in equal pairs, not all four equal. A rhombus has all sides equal but its angles aren’t necessarily right angles. A parallelogram has opposite sides parallel and equal, but doesn’t require all sides equal or all angles 90 degrees. Therefore, the only shape that meets both conditions is the square.

A figure with four equal sides is equilateral, and a figure with four right angles is equiangular. When a quadrilateral has both properties at once, it must be a square. A rectangle has four right angles but sides come in equal pairs, not all four equal. A rhombus has all sides equal but its angles aren’t necessarily right angles. A parallelogram has opposite sides parallel and equal, but doesn’t require all sides equal or all angles 90 degrees. Therefore, the only shape that meets both conditions is the square.