\(ABCDEFGHIJ\) is a regular decagon. The rotation centered at \(G\) with an angle of alpha takes \(D\) to \(J \). Given that alpha is less than 180 degrees, find alpha.
I don't know why the latex isn't working.
alpha = 84 degrees.
I am not sure about the process, could you share some of your thought process? Thanks!
Thank you so much! I get the answer now.