Question 302842
Using Pythagoras Theorem: 

{{{60^2 = 30^2 + 50^2}}} if it is true , it is a right angle triangle

However, {{{30^2 + 50^2}}} = 900 + 2500 = 3400 is not equal to (60^2 = 3600) 

Therefore, it is not a right angle triangle.