Answer:
Ok tell me what you need so I can help
 
        
             
        
        
        
The Polygon has 5 sides hence it is called a Pentagon.
Note : if it is 4 sided, it could be a square, or rectangle or parallelogram or rhombus.
5 sided is a Pentagon
6 sided is an Hexagon
7 sided is a Heptagon
8 sided is an Octagon
9 sided is a  Nonagon
10 sided is a Decagon
The one in the question is 5 sided, so it is a Pentagon. 
        
             
        
        
        
Answer:
06959399449444rifotvovty5
 
        
             
        
        
        
80*t+70*t=50
t = .33 hours =20 minutes
This assumes the trains are going opposite directions (opposite tracks so I’m assuming opposite directions)
        
             
        
        
        
Answer:
Cluster sample
Step-by-step explanation:
i did it before