Question

if the sides of a triangle are 3 cm,
4cm and 5cm long doesn't determine
Whether the triangle is a right angled
tricingle​

Answer 1

Yes the triangle is a right angled triangle.

A right-angled triangle has one angle of 90°. The side opposite the right angle is always the longest side, and is called the hypotenuse. ... The lengths of the sides are 3cm, 4cm and 5cm. The hypotenuse is the 5cm side because it is opposite the right-angle and it is the longest side.

3,4,5 are called Pythagorean triple.