Tell whether the triangle is a right triangle

I do not know if there is a photo for your question but here is a very easy way to tell if a triangle is a right triangle!

A right triangle will always have a 90 degree angle and two acute angles. A 90 degree angle is a angle like the corner of a book or table. An acute angle is anything smaller than a 90 degree angle.

Step-by-step explanation:

we know that,

Then,

33° + 87° + x = 180°

x = 180° - 120°

Now,

we know that,

Then,

x + y = 180°

60° + y = 180°

Hence,

The value of y = [120]°