The answer to your query is 19.2
        
                    
             
        
        
        
Answer:
3.since two base side are equal
4.sum of interior angle of the triangle is 180
9.base angle of isosceles triangle
16.the inscribed angle from the diameter is 90°
21.being CAE=90°
Step-by-step explanation:
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Answer:
14%
Step-by-step explanation:
 
        
             
        
        
        
Your question seems incomplete 
is there an image supposed to be attached to it