Question

the figure shows two intersecting lines.
write an equation to show how ( mangle 1 ) and ( mangle 2 ) are related.

Explanation:

Step1: Identify angle relationship

Angles 1 and 2 form a linear pair, so their sum is $180^\circ$.

Step2: Write the equation

Set the sum of the two angle measures equal to $180^\circ$.
$m\angle 1 + m\angle 2 = 180^\circ$

Answer:

$m\angle 1 + m\angle 2 = 180^\circ$