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Find x.

 

 Feb 27, 2021
 #1
avatar+591 
+1

we know that the sum all 3 angles of a triangle is 180. we also know that two angles directly opposite from each other are the same, and that the angle of a striaght line is 180. We see that there is an angle directly opposite from the 39 degrees angle, so the bottom left angle of the triangle is 39, and because there is a line splitting the line or the 180 degrees, we know those two degrees sum up to 180, so 109+a=180, a=71, so the bottom right corner angle is 71, and we know that all 3 angles sum up to 180, so 71+39+34+x=180, 144+x=180, x=$\boxed{36}$

 Feb 27, 2021
 #2
avatar+1224 
+1

The angles in a triangle add to 180 degrees.

 

 

39 + (34 + x) + (180 - 109) = 180

 

39 + 34 + x +71 = 180

 

x = 36

 Feb 27, 2021
 #3
avatar+36916 
+1

Here is a picture:

 

 Feb 27, 2021

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