They’re similar bc all sides have the same scale factor
        
             
        
        
        
Answer:
Step-by-step explanation:
When the circle is fill in it means theres more than one answer so it can be greater than or equal to or less than or equal to. When theres only a circle is means greater then or less than 
I hope this helps you to get the right answers.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
A relation from a set X to a set Y is called a function if each element of X is related to exactly one element in Y. That is, given an element x in X, there is only one element in Y that x is related to. ... This is a function since each element from X is related to only one element in Y.
 
        
             
        
        
        
The answer to your question is $1978