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A teacher tells the class: 'A square is a special rhombus and also a special rectangle.'
Which single extra property turns a rhombus into a square?

Class 8Properties of QuadrilateralsGeometry
  • AIts diagonals bisect each other
  • BAll its sides are equal
  • COne of its angles is 90°
  • DIts opposite sides are parallel

Step-by-Step Solution

A rhombus already has equal sides; adding one 90° angle (which forces all four) makes it a square.
Answer: C) One of its angles is 90°

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