How much can 1/2 go into 25

Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. consider the given table.

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

Find the solution on the interval [0, 2pi)