(for the 2nd question) They are similar because the 2nd triangle is just a smaller version of the first one. 
I am sorry but i don't know what theorem means :( 
Hope i could hope some 
        
             
        
        
        
Answer:
4.222222 or jus 4.2 with - over the 2 to indicate multiple 2's
 
        
                    
             
        
        
        
Um idk lane and oops idk Avenue
        
             
        
        
        
Answer:
The personal hygiene part of the store (I think)
Step-by-step explanation:
This is an ultimately weird question, so I don't really know. But my answer is what I think, (I don't even know if it exists though).