A triangle with sides 5, 12, and 13 is: A Equilateral B Right (5² + 12² = 13²) C Isosceles D Obtuse ✓ Correct Answer: Option B 5² + 12² = 25 + 144 = 169 = 13². Satisfies Pythagorean theorem → right triangle. Practice DAT Exam Prep Quizzes → Browse All Questions Study Flashcards