Answer:
The diameter is any straight line that passes through the center of the circle, which endpoints can lie on. The radius is half the diameter. They help us find the circumference of a circle
 
        
                    
             
        
        
        
Answer:
44 
Step-by-step explanation:
Since triangles are similar, so their corresponding sides would be in proportion. 
Therefore, 

 
 
        
             
        
        
        
Answer:24
Step-by-step explanation:
 
        
             
        
        
        
Since they share the same angle measurement, and 4 is smaller than 158 degrees, you subtract 158 from 180 and angle 4 = 22 degrees
        
             
        
        
        
Answer:
it's blurry, you need a new picture