Question

What is the measure angle of F?
I already know it's 140, but how do you arrive at that answer?

Answer 1

So the angles combined should be 360 and we already know h is 90 degrees. so the rest should equal 270. Just set up an equation of:

9x + 14x + 4x = 270

then solve for x, first combine like terms

27x = 270

then get x alone by dividing

x = 10

then plug 10 into the problem next to angle f: 14x

14 * 10 = 140