Answer:
<C is similar to <T
Step-by-step explanation:
ABCD ≈ RSTU
The angles are similar in order
<A is similar to <R
<B is similar to <S
<C is similar to <T
<D is similar to <U
 
        
                    
             
        
        
        
I don't understand what your asking
        
             
        
        
        
Yes, they are. 
Inverse of matrices:
plug matrix into calculator 
second matrix
edit
second quit
second matrix
press A
press x^ -1
enter