Sum of angles in triangle =? If one angle is obtuse say 95 degrees what can you say about the other two ?
Did you make a sketch?
How many obtuse angles can there be in an obtuse triangle?
Suppose there could be two obtuse angles in a triangle.
The "triangle" might look like this:
Code:\ / \ / \ / \ / \ 92o 95o / *-------------*
Then where is the triangle?