In the diagram mz3= x+ 30 and mz4 =2x-80. What is the measure of angle 3?

Given:

Consider the below figure attached with this question.

and .

To find:

The measure of angle 3.

Solution:

From the below figure it is clear that, angle 3 and angle 4 are vertically opposite angles.

We know that, vertically opposite angles are always equal. So,

Now,

Therefore, the measure of angle 3 is 140 degrees.

answer: t=3

step-by-step explanation: