1.

Which of the following must be a square ?A. A rhombus whose adjacent angler are equal.B. A rectangle whose adjacent sides are equal .C. Both (a) and (b)D. Neither (a) or (b)

Answer» Correct Answer - C
A rhombus whose adjacent angles are equal.
`:.` Each angle would be `90^(@)`.
Such a rhombus would be a square.
A rectangle , whose adjacent side are equal, would have all sides equal.
`:.` Such a rectangle would be a square.
Hence, the correct option is (c ).


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