Question

Find whether the given sides of the $△$ form a $rt\angle d△$ or not. 9 cm, 12 cm and 15 cm.
If the above answer is true then mention answer as 1, else mention 0 if false .

Answer 1

A $△$ is $rt\angle d△$ if the square of the largest side is equal to the sum of squares of the smaller sides.

Here, Square of largest side = ${15}^2=225$

Also, Sum of square of smaller sides = $9^2+(12{)}^2=81+144=225$

Here, Square of largest side = Sum of square of smaller sides

Hence, the triangle is a $rt\angle d△$