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Are the following conditional statements true? Justify your answer by using counterexamples. If a quadrilateral has four right angles, then it is a rectangle.
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Are the following conditional statements true? Justify your answer by using counterexamples.

If a quadrilateral has four right angles, then it is a rectangle.

User Voxoid
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False. A square is a quadrilateral with four right angles, but is not a rectangle.
User Erico
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