Let A_1 A_2 A_3 \dotsb A_{10} be a regular polygon. A rotation centered at A_1 with an angle of \alpha takes A_4 to A_8. Given that \alpha<180 degrees, find \alpha in degrees.
+51 Hey Guest, EP and Melody had a shot at this one here : https://web2.0calc.com/questions/halp-im-so-confused
