Answer:
When two triangles are congruent they will have exactly the same three sides and exactly the same three angles. The equal sides and angles may not be in the same position (if there is a turn or a flip), but they are there.
 
        
                    
             
        
        
        
Hello,
When you have a polygon inscribed in a circle, the opposite angles are supplementary.
So we can start by saying that A + C = 180. Or x + 3x = 180. This gives us a value of 45 for x.
If we input that in for angle B, we get: 2(25) - 10 = 80.
If angle B = 80, then angle D must be 100, because the angles are supplementary.
Good luck,
MrEQ
        
             
        
        
        
Answer:
Step-by-step explanation:
14. You would add 41 + 41 + 61 + 61 because you just need to add together all the sides.
15.  you need to measure the all the sides for 15 and do the same thing that you did on 14
 
 
        
                    
             
        
        
        
Answer:
15400 ÷ 6/100 
Step-by-step explanation:
next step do yourself 
I hope it will help you
 
        
             
        
        
        
(104+137+154+131+x) / 5 = 130
The calculation part I would like to leave it for you. It's a good practice.