Question

finding angles in transversal problems (level 1
question
examples
given ( m parallel n ), find the value of x.
( 129^circ ))

Explanation:

Step1: Identify angle relationship

The 129° angle and $x^\circ$ are same-side interior angles, which are supplementary (sum to 180°) because $m \parallel n$.

Step2: Set up supplementary equation

$x + 129 = 180$

Step3: Solve for x

$x = 180 - 129$

Answer:

$51$