Hello!
the angles in a triangle add to 180°
------------------------------------------------------------------------------------------------------
Triangle 1
115 + 35 + 25 = 175
Since it does not equal 180 it is not triangle 1
------------------------------------------------------------------------------------------------------
Triangle 2
115 + 32 + 33 = 180
Since it does equal 180 it is triangle 2
------------------------------------------------------------------------------------------------------
The answer is triangle 2
Hope this helps!