So i have a practice on this. it says ''The measure of angle CBD is 73 degrees. Find the other figures below'' but i really don't understand what is necessarily happening here.

''what is the measure of angle EFB?''

''What is the measure of angle EFH?''

''What is the measure of angle DBF?''

''What is the measure of angle BFG?''

''What is the measure of angle GFH?''

Can someone help me out or explain this?