Question

check if a triangle of given sides is a right angle or not side is 5CM 12cm 13cm​

Answer 1

here is ur answer:

If a ∆ is right angled ∆ then it must obey Pythagoras theorem.

So, square of longest side should be equal to sum of squares of other two sides.

${13}^{2} = {12}^{2} + {5}^{2} \\ \\ 169 = 144 + 25 \\ \\ 169 = 169$

it obeys Pythagoras theorem, so it is right angled ∆

hope it helps you!

Answer 2

Answer:

Step-by-step explanation:

Let, AB = 5

BC = 12

AC = 13

According to Pythagoras theorem,

AB²+ BC² = AC²

(5)² + (12)² = AC²

25 + 144 = AC²

169 = AC²

13 = AC

Thus, the given triangle is a right angled triangle.