Question

Find whether the sides of the $△$ as given below form a $rt\angle d△$ or not. 8 cm, 14 cm and 18 cm.

Write yes (1) or no (0).

Answer 1

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

Here, Square of largest side = ${18}^2=324$

Also, Sum of square of smaller sides = $8^2+(14{)}^2=64+196=260$

Here, Square of largest side $\ne$ Sum of square of smaller sides

Hence, the triangle is not a $rt\angle d△$ .