Polygons - 11-gons
Properties of 11-gons, interior angles of 11-gons
Polygons: Properties of 11-gons | |||
Sum of the Interior Angles of an 11-gon: | |||
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Regular 11-gons: | |||
The properties of regular 11-gons: | |||
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 1620 degrees (from above)... And there are eleven angles... So, the measure of the interior angle of a regular 11-gon is about 147.27 degrees. | |||
The measure of the central angles of a regular 11-gon: | |
To find the measure of the central angle of a regular 11-gon, make a circle in the middle... A circle is 360 degrees around... Divide that by eleven angles... So, the measure of the central angle of a regular 11-gon is about 32.73 degrees. |