Answer:
7
Step-by-step explanation:
By Basic proportionality theorem:

 
        
             
        
        
        
Let's assume 
shorter side as x
so, first side =2x
third side =x+19
now, we can find perimeter of triangle
perimeter of any triangle is 
first side + shortest side + third side
so, we get 

we are given perimeter=187
so, we can set it to 187
and then solve for x





so, 
shortest length is x=42 feet
First side =2x=2*42=84feet
third side =x+19=42+19=61 feet
so, dimensions are 
first side is 42 feet
second side is 84 feet
third side is 61 feet................Answer
 
        
             
        
        
        
Answer:
yes 
Step-by-step explanation:
12.54
>
12.53
reason why is because of the 4>5
 
        
                    
             
        
        
        
Answer:
Regular Octagon
Step-by-step explanation:
There are only three regular shapes that tessellate – the square, the equilateral triangle, and the regular hexagon. All other regular shapes, like the regular pentagon and regular octagon, do not tessellate on their own.