A triangle with sides 5, 12, 13 is?
- Isosceles
- Scalene
- Right triangle
- None of these
Explanation
A triangle with sides 5, 12, and 13 follows Pythagoras theorem.
5² + 12² = 25 + 144 = 169 = 13².
So, it forms a right-angled triangle.
It is a special Pythagorean triplet.
Right angle is opposite the longest side (13).
Last verified on 25-05-2026
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