If four triangles are constructed with sides of the length indicate below, which of the following triangles will not be a right angle?/চারটি ত্রিভুজের বাহুগুলির দৈর্ঘ্য নিম্নরূপ। কোনটি সমকোণী ত্রিভুজ নয়?
A12, 15, 18
B3, 4, 5
C5, 12, 13
D8, 15, 17
Answer: A - 12, 15, 18
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