Question

find x. 78° 66° x o. find the measure of the indicated angle.

Explanation:

Step1: Recall triangle angle sum

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

Step2: Set up the equation

Let the angles be \(78^\circ\), \(66^\circ\), and \(x\). So, \(78 + 66 + x = 180\).

Step3: Solve for x

First, calculate \(78 + 66 = 144\). Then, \(x = 180 - 144\).
\(x = 36\)

Answer:

\(36^\circ\)