The size of the triangle is 55 degrees.
        
                    
             
        
        
        
Answer:
Square
Step-by-step explanation:
If its 4 sided and two measures are 90 degrees then that means the other two must be 90 degrees. That means its a square or a rectangle. Now since the 4 sides arent all the same and two sides being 6 and two sides being 5, you can rule out it being a square. 
 
        
             
        
        
        
The slope is at 11. i think i am pretyt sre