Answer:
Angle ADF is equal to 52° and angle FDC is equal to 38°.
Explanation:
In the image attaches, you can observe that angles ADF and FDC are complementary angles, because they sum 90°.
![\angle ADF + \angle FDC = 90\°](https://img.qammunity.org/2021/formulas/mathematics/middle-school/4epylo25hhvfpvejqn1v1ig0xim4v9rgf6.png)
And we know that
![\angle ADF=2x\\\angle FDC = x+12](https://img.qammunity.org/2021/formulas/mathematics/middle-school/2xqbb7kbn6mjh486le8uup1sp0ucp8mtsf.png)
Replacing these expressions, we have
![2x+x+12=90\°\\3x=90\° - 12\°\\x=(78)/(3)\\ x=26](https://img.qammunity.org/2021/formulas/mathematics/middle-school/c9pvk09pjptx14uir5o7da5uz163nnqxxf.png)
Then, we replace this value in each expression to find both angles measures.
![\angle ADF= 2(26)=52\°\\\angle FDC = 26+12=38\°](https://img.qammunity.org/2021/formulas/mathematics/middle-school/c0npdgw2ptyvv7ehq3tfqbpssvoste1r6j.png)
Therefore, angle ADF is equal to 52° and angle FDC is equal to 38°.