The number of telephone lines in each country in Central America and the Caribbean is shown above in a dot plot. The number of telephone lines in each country has been rounded to the
nearest 250 thousand. According to the dot plot, what is the median number of telephone lines
(in thousands)?

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