Question

can someone help me find the value of x?

Answer 1

Answer:

The measure of arc x is $60\°$

Step-by-step explanation:

we know that

The measurement of the external angle is the semi-difference of the arcs it comprises.

so

In this problem

$55\°=\frac{1}{2}(170\°-x\°)$

solve for x

$110\°=(170\°-x\°)$

$x\°=(170\°-110\°)=60\°$