Question

find the measure of the supplement of a 60° angle. the measure of the supplement of a 60° angle is \square° (simplify your answer. type a whole number or a decimal.)

Explanation:

Step1: Recall the definition of supplementary angles

Supplementary angles are two angles whose sum is \(180^\circ\). Let the measure of the supplementary angle be \(x\). So we have the equation \(x + 60^\circ=180^\circ\).

Step2: Solve for \(x\)

Subtract \(60^\circ\) from both sides of the equation: \(x = 180^\circ - 60^\circ\).
Calculating the right - hand side, we get \(x = 120^\circ\).

Answer:

\(120\)