If they're asking for "congruent" which we know is the shape is the same or equal to. Out of the transformations I assume Dilation because you're altering the size of the shape meaning the image is either bigger than or less than the pre-image. Of course a shape bigger is not equal to the original shape. 
think of a king size candy bar to a fun size bar. they're not congruent or the same 
 
        
             
        
        
        
Answer:
you have the same quiestion 3 times 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
123414
Step-by-step explanation:
12
213
213
32
 
        
             
        
        
        
Answer:
1. =
2. <
3. <
Step-by-step explanation:
Note: When comparing decimals you always place both decimals right above each other.
1 is equal to because once you put a 0 behind the 2.1 they are both the same.
2.10
2.1    <add 0 as space holder
2 is less than because they are both negative you are looking for which one is closest to zero.
-4.5   <add 0 as place holder
-4.25   <closest to zero
3 is less than because  (pie) equals 3.141592654 which is less than 3.2.
(pie) equals 3.141592654 which is less than 3.2.
3.141   <do not need to add whole decimal
3.2   <add two 0's as a placeholder