Answer:
x=30
angle F is 60 degrees
Step-by-step explanation:
background info
the interior angles of a triangle is always 180 degrees total
angle G is 90 degrees because it is a right angle
----
x+2x+90=180
3x+90=180
3x=90
x=30
---angle of F
measure of angle F as shown by the diagram is 2x
=2x
x is 30 from above
=2(30)
=60 degrees
