Abicyclist started riding at 8: 00 a. m. 8: 00 a. m > 3.5 > 8: 14 a. m > 5.5 > 8: 36 a. m. what was the bicyclist's average rate of speed in miles per hour?

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