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Determine whether triangle with vertices A(0, 0), B(4, 0), C(0, 3) is right-angled.
AYes — at A
BNo, not right-angled
CYes — at B
DYes — at C
Answer & Solution
Correct answer: A. Yes — at A
AB = 4, AC = 3, BC = 5. Check: AB² + AC² = 16 + 9 = 25 = BC². Right angle at A.
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