Hey there Smarty!
This would be considered to be a (acute angel) which in this case, we would have to make sure that this whole triangle would equal less than 270 because each angle would be less than [tex]90[/tex]°
If we add/multiply [tex]\boxed{(90+90+90) \ or \ (90*3) = 270}[/tex].
So, we would have to know that was ever this would all add up to be, this would have to be less than 270°
[tex] \left[\begin{array}{ccc}\boxed{\boxed{(2.5+5) \\ \\ (2.5*2.5) \\ (2.5-2) \\ (2.5-1) \\}} \\ \\ this \ would \ be \ why \ I \ would \ say \\ that \ this \ would \ be \ the \ answer \end{array}\right] [/tex]
I truly hope this helps, and also, it's kind of my
first time doing this I hope this would be helpful.
~Jurgen