Answer:
Did u mean triangle? There are no angles on a line.
Or do you mean two angles of 90 degrees?
Step-by-step explanation:
 
        
             
        
        
        
Answer:800 meters 
Step-by-step explanation:
 
        
                    
             
        
        
        
3/10+ 2/5
= 3/10+ 4/10 (common denominator is 10)
= 7/10
The final answer is 7/10~
        
                    
             
        
        
        
Answer:
d= 8.6 ft
Step-by-step explanation:
In similar triangles, the corresponding sides are in proportion.

To find the value of x,

 
d = 8.6 ft