The first equation: t=b-4 The second equation: b+t=348

Since is in terms of b from the first equation, this expression can be substituted into the second equation where appears. Write an equation that shows this substitution.

Type the equation:

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