Question

the diagram shows a triangle.
what is the value of y?
y = □°

Explanation:

Step1: Recall triangle angle sum

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

Step2: Sum the known angles

$74^\circ + 72^\circ = 146^\circ$

Step3: Solve for $y$

Subtract the sum from $180^\circ$:
$y = 180^\circ - 146^\circ$

Answer:

$34^\circ$