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How many lines of symmetry does a square have?

  1. 2

  2. 4

  3. 6

  4. 8

The correct answer is: 4

A square has four lines of symmetry. This means that if you were to fold the square along these lines, the top and bottom halves would match up perfectly. Option A is incorrect because two lines of symmetry would only result in two matching halves. Option C is incorrect because six lines of symmetry would result in six matching halves, which is not possible for a square. Option D is incorrect because eight lines of symmetry would result in eight matching halves, which is also not possible for a square.