As per given by the question,
There are given that a sides and length of the four triangle.
Now,
Check one-by-one, whether triangles are right triangle or not.
Then,
For check the triangle is right triangle or not, use pythagoras theorem.
Now,
For first triangle,
The side is given,
Suppose ,
Then,
From the pythagoras theorem,
Put the value of A, B, and C in above formula;
So,
Hence, first triangle is not a right angle triangle.
Now,
For second triangle,
Then,
Hence, the second triangle is right angle triangle.
Now,
For third triangle,
Hence, the third triangle is not a right angle triangle.
Now,
For fourth triangle,
Hence, the fourth triangle is also a right triangle.
So,
The second and fourth triangle is right angle triangle.