Answer:
The value of CXF is 50°
Explanation:
If you look at CXD, it is in 90° angle you can tell by the box. The value of FXD is in 40° angle. To find the value of CXF, you have to subtract the 90° and 40° of FXD. So you get 50° as the value of CXF.
90 minus 40 so the answer is 50
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