Which shows four consecutive terms of a geometric sequence ? A. 1,5,25,125
B. 10,20,30,40
C. 50,100,150,200
D. 1,-1,2,-2

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