设边为N条360=36NN=10180×(10-2)=1440所以内角和是1440°
180-36=144(度)360÷(180-144)=10(条)10×144=1440(度)
边数360/30=10内角和180*(10-2)=1440°
边数360/36=10内角和180*(10-2)=1440°
(180-36)×n=144n