A nonregular hexagon has five exterior angle measures of 55, 58, 69, 57 and 55. What is the measure of the interior angle adjacent to the sixth exterior angle?
The exterior angles will have a sum of 360. First find the missing exterior angle.
360-(55+ 58+ 69+ 57+ 55)
360-(294)=66
The interior and exterior angles are supplementary so the interior angle is 180-66
= 114
A nonregular hexagon has five exterior angle measures of 55, 58, 69, 57 and 55 ,the measure of the interior angle adjacent to the sixth exterior angle is \(114\textdegree\).
Given: Non regular hexagon whose five exterior angles be
\(\rm 55 \textdegree,58\textdegree,69\textdegree,57\textdegree\& \;55\textdegree\)
Non regular hexagon is where all the angles is not equal.
We know that the Sum of all exterior angle = \(360\textdegree\) now let the sixth angle be x
To find the value of x we will simplify,
\(\rm 55\textdegree + 58\textdegree + 69\textdegree + 57\textdegree+ 55\textdegree + x = 360\textdegree\\294\textdegree + x= 360\textdegreex = 360\textdegree - 294\textdegree\\x = 66\textdegree\)
Here, the measure of the interior angle is adjacent to the sixth exterior angle so,
Interior angle is the difference of 180° to the 6th exterior angle.
\(\rm Interior \;\;angle + 66\textdegree = 180\textdegree\\Interior\; angle = 180\textdegree - 66\textdegree = 114\textdegree\)
Therefore, The measure of the interior angle is 114°
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