Is the sum of two angles sometimes, always, or never an obtuse angle?

Sometimes because you can have angles equal to 1 and 2 (which equal 3) and that is an acute angle.

An obtuse angle would be an angle more then 90 degrees.

So if you add two angles together, it could be less then 90 degrees, such as 30 + 50 = 80 degrees.

However, it can also be more then 90 degrees, or an obtuse angle, for example 60 + 50 = 110 degrees.

So it's sometimes.