Beacuse  <span>A square by definition is a "plane figure having four equal sides." Rectangles' sides are not equal and hence cannot be a square. 
A rectangle by definition is a "four-sided plane figure with 4 right angles" - which also implies that a square can be a rectangle because it is also a four-sided plane figure with 4 right angles...... hope this helps</span>
        
                    
             
        
        
        
Answer:
hola
Step-by-step explanation:
cómo estás yo bien compita
 
        
                    
             
        
        
        
The eccentricity of an eclipse is found by using the
formula, eccentricity = c/a
Where,
c represents the distance between the center and a focus. 
a represent the distance between that focus and a vertex 
 
The numerical value of the eccentricity of an eclipse ranges
between 0 and 1
 
        
             
        
        
        
Answer:
Step-by-step explanation:
K=2J-3