Explain how a square is

(i) a quadrilateral

(ii) a parallelogram

(iii) a rhombus

(iv) a rectangle

(i) A square is a quadrilateral since it has four sides

(ii) A square is a parallelogram since its opposite sides are parallel to each other

(iii) A square is a rhombus because its four sides are of the same length

(iv) A square is a rectangle because its each interior angle measures 90°

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