Question
The sides of certain triangles are given below. Determine which of them are right triangles.
$a=7 cm, b=24 cm \text { and } c=25 cm$

Answer

We know that in a right angled triangle, the square of the largest side is equal to the sum of the squares of the smaller sides. Here, the larger side is c , which is 25 cm .
$c^2=625$
We have:
$a^2+b^2$
$=7^2+24^2$
$=49+576$
$=625=c^2$
Thus, the given triangle is a right triangle.

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