Polygons
Polygons
TGM Original Questions
Find the sum of interior angles and the size of each interior angle of a
- regular octagon
- regular nonagon
- regular decagon
- regular dodecagon (12-gon)
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Answer:(a) Sum \(=1080^\circ\), each angle \(=135^\circ\) (b) Sum \(=1260^\circ\), each angle \(=140^\circ\) (c) Sum \(=1440^\circ\), each angle \(=144^\circ\) (d) Sum \(=1800^\circ\), each angle \(=150^\circ\)
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