A triangle has sides that measure 5 cm, 12 cm and 13 cm. Identify the type of triangle.

A. Equilateral triangle

B. Isosceles triangle

C. Obtuse angled triangle

D. Right angled triangle

Correct Answer is :

D. Right angled triangle

Explanation

 These measures fallow to Pythagoras theorem as.
(13)² = 5² + 12²
169 = 25 + 144
169 = 169
L. H. S = R. H. S
Therefore, it is a right angled triangle