Question

Explain why the interior angle of a regular nanogan is 140 degree.
Please help friends. ​

Answer 1

Step-by-step explanation:

All sides are the same length (congruent) and all interior angles are the same size (congruent).

To find the measure of the angles, we know that the sum of all the angles is 1260 degrees .

And there are nine angles...

So , 1260 ÷ 9 = 140

So, the measure of the angle of a regular nonagon is 140 degrees