Divide the nonagon radially into 9 congruent, equilateral isosceles triangle. Each triangle has vertex angle of 360°/9 = 40°.
Interior angle of polygon = 180°-40° = 140°. 
Sum of interior angles = 9(140°) = 1260°
        
             
        
        
        
Answer:
$0.23
Step-by-step explanation:
Theres 16 ounces in a pound. 16-1.7=14.3
divide $3.31 by 14.3
0.23
 
        
                    
             
        
        
        
Answer:
23
Step-by-step explanation:
 
        
             
        
        
        
Image result for factor 25 into prime numbers
25 is a composite number, and it is 5 squared. 25 = 1 x 25 or 5 x 5. Factors of 25: 1, 5, 25. Prime factorization: 25 = 5 x 5, which can also be written 25 = 5².
 
        
             
        
        
        
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