Question

find the value of n.
126°
your answer

Explanation:

Step1: Recall angle - sum property

The sum of angles on a straight - line is 180°. Here, we have 126° and three angles of measure \(n^{\circ}\) that together form a straight - line. So, the equation is \(126 + 3n=180\).

Step2: Isolate the term with \(n\)

Subtract 126 from both sides of the equation: \(3n=180 - 126\).
So, \(3n = 54\).

Step3: Solve for \(n\)

Divide both sides of the equation by 3: \(n=\frac{54}{3}\).

Answer:

18