Question

Look at the figure.
What is the value of x?

Answer 1

30

40

10

20

Answer 2

I'm almost positive it's not the first one.

Answer 3

3x-10 = 180-70

Answer 4

?

Answer 5

..
3x = 120
x= 40

Answer 6

Ah, I see what your saying now!

Answer 7

How did you figure that out?

Answer 8

two indicated angles in my draw are equal .. the same goes with your problem

Answer 9

since 70 is 180 minus the equal angle
we get
180-70 = 3x-10

Answer 10

ohh, so that's where that comes in play...

Answer 11

in your problem
angle DCF = angle CBE

Answer 12

but DFC = 180 - 70

Answer 13

Thanks! I understand now.

Answer 14

yw :)