Question

what is the value of $v$?

Explanation:

Step1: Identify straight angle property

A straight angle equals $180^\circ$.

Step2: Set up equation for $v$

$v + 140^\circ = 180^\circ$

Step3: Solve for $v$

$v = 180^\circ - 140^\circ = 40^\circ$

Answer:

$40^\circ$