If a triangle has three equal sides, it is equilateral. This triangle has unequal sides. Conclusion?
Q1. If a triangle has three equal sides, it is equilateral. This triangle has unequal sides. Conclusion?
Answer: Not equilateral
Explanation: Modus tollens valid. B/C/D are unrelated classifications. Not equilateral is correct because it matches what the question requires. USAT, HAT and MDCAT analytical sections repeat this pattern.