.prove that the interior angle of a regular pentagon is three times the exterior angle of regular decagon
Answers
Answered by
4
Answer:
total sum of angles for a pentagon - (5-2)*180 = 560
total sum of angles for a decagon - (10-2)*180 = 1440
interior angle of a regular pentagon - 560/5 = 108
interior angle of a regular decagon - 1440/10 = 144
exterior angle of a regular decagon = 180-144 = 36
108 = 36(3)
As the interior angle is 108 degrees and the exterior angle is 36.
Similar questions