Question

question 2(multiple choice worth 2 points)
(14.03 lg)
what is the measure of the unknown angle?
50°
40°
90°
130°
310°

Explanation:

Step1: Recall angle - circle relationship

A full - circle is 360°.

Step2: Set up the equation

Let the unknown angle be $n$. We know that $n + 50^{\circ}=360^{\circ}$.

Step3: Solve for $n$

$n=360^{\circ}- 50^{\circ}=310^{\circ}$.

Answer:

$310^{\circ}$