Evaluate the expression 5 (m - 2) + 10w when m = 8.4 and w= 1.25.

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

Which geometric principle is used to justify the construction below?

Which point has an coordinates of (2,0) ? a