Hi guys, I have been working for a long time and have attempted to construct a decagon but have failed all three times. I know that all the external angles are 144 degrees and they all add up to 1440 degrees. Every time I draw the decagon I come up with a hendecagon. I don't know why I come up with this because I have all of the angles that a decagon consist of. I have searched up YouTube videos on how to create a decagon, but none of them seem to help. I would appreciate if someone could suggest a way to construct a proper decagon. Thank You!