Question

In triangle ABC, if AB = 3 cm, BC =4 cm and CA = 5 cm , then what type of triangles triangle ABC.​

Answer 1

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In this triangle, all three sides are different in size, so this triangle is a scalene triangle

Damñ didn't notice that it's also a right angled triangle-

Sorry and have a good evening!

Answer 2

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To form a right angle triangle,

the given sides should satisfy the pythogoras law

=> AB = 3 , BC = 4 and AC= 5

=> 5² = 3² + 4²

=> 25 = 9+ 16

=> 25 = 25

LHS = RHS

it satisfies the pythogars law

So, it does form a right angle triangle.