Question

How do I do this problem?

Answer 1

Answer:

Step-by-step explanation:

Since the 2 horizontal lines are parallel,

angle 1 and 3 are corresponding angles and hence equal

So, angle 1  = angle 3

20x + 60 = 30x + 20

10x = 40

x = 4

Now, finding angle 1

Angle 1 = 20x + 60

Angle 1 = 20 (4) + 60

Angle 1 = 140 degrees

Mark Brainliest if this answer helped