Question

If the sides of a triangle are 3cm, 4cm and 5cm long, determine whether the triangle is a right angled triangle.​

Answer 1

Answer:

he can determine it by pythagorus theorum

longest side is 5cm so if 3^2 + 4^2 = 5^2

9 + 16 =5^2

25 = 5^2

5=5

yes its a right angel triangle

Answer 2

Answer:

$consider \: a \: triangle \: abc \: \\ let \\ ab = 3cm \\ bc = 4cm \\ ac = 5cm \\ \\ by \: using \: pythagors \: theorem \\ {ac}^{2} = {ab}^{2} + {bc}^{2} \\ {5}^{2} = {3}^{2} + {4}^{2} \\ 25 = 9 + 16 \\ 25 = 25 \\ \\ therefore \: the \: triangle \: is \: a \: right \: triangle$