Discover Questions

Is there a quick way to tell if a triangle is acute or obtuse with only the lengths of all 3 sides? pls explain thanks? Hey,guys.
I am supposed to sign this digitally but how pls.
Here is a screenshot : http://prntscr.com/fz6d0c? Characteristics of fad and trend? How to calculate the concentration of the acid? Explain Net Neutrality to me like I'm 2?