Question

the measures of the angles of a triangle are shown in the figure. answer attempt 2 out of 2 $x = $

Explanation:

Step1: Recall triangle angle sum rule

The sum of angles in a triangle is $180^\circ$.

Step2: Set up the equation

$45 + 57 + x = 180$

Step3: Calculate sum of known angles

$45 + 57 = 102$

Step4: Solve for $x$

$x = 180 - 102$

Answer:

$78$