Pls help explain this to me

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

Given: pqrs is a parallelogram prove: pr and qs bisect each other at t

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