Please use the following image below in order to answer the question correctly:

In the diagram, ⊙R≅⊙S.
Find m DE⌢. (The symbol is in the image below)

What is the degree measurement of m DE? (Again the symbol is in the image below)

Please show all of the work on how you got your answer.

You don't not need to explain if you aren't able to. All I want is the work on how you got your answer.

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap