alleryStatement: If a shape is a square, it has 4 equal sides. Shape S does not have 4 equal sides. Conclusion?
AShape S is a square
BShape S is not a square
CShape S is a triangle
DShape S is a circle
Answer & Solution
Correct answer: B. Shape S is not a square
By contraposition (modus tollens), if having 4 equal sides is necessary for a square, lacking it means Shape S is not a square.
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