29. A test has 3 parts. In part 1, a student must do 2 out of 5 questions. In part 2, a student must answer 3 out of 5 questions. In part 3, a student must do 1 out of 3 questions. In how many ways can a student answer the test?​

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