Step by step
The question
Question: find what kind of triangle has sides 2, 3, 6.
1 Check the sides
The two short sides together, 2 + 3 = 5, are not longer than the long side, 6.
They cannot meet.
So no triangle has these sides: this is impossible.
2 + 3 < 6
Answer
2 + 3 < 6