Which correctly describes how to determine the measure of angle 1?

angle one=99 degrees

Step-by-step explanation:

Because they are parallel lines, angle one and the 81 degrees angle are supplementary(equals to 180 degrees).

The 81 degrees angle and angle two are also corresponding and in parallel lines corresponding angles are equal, and a straight angle is 180 degrees proving that angle one and the 81 degrees angle are supplementary.

So subtract 81 from 180 and you will get 99 degrees angle one's measure is 99 degrees

if x = 1, then the answer is 3.5

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)