Answer:
m = 8
Step-by-step explanation:
Here's your solution
=> in traingle DHF and traingle EGF
we have angle DHF and EGF = 90°
and angle F is common , so both traingle are similar by AA similarity
=> 12/m = 15/10
=> m = 120/15
=> m = 8
hope it helps and your day will be full of happiness
