)59(2)4(3)4_+1\r2.180°360°180°xn\r3.360°540°720°1800U(_N2)\r4.(1)4315222412(2)245133185\r5.(1)47353583(hijSTklN)\r(2)1212131314141515161011616(m41U3\rjSTklN)\r6.nx(n+1)\roU1.C2.C3.D4.D5.A\rFU1.\r@sP.........n\rt123.........n\ruv468.........2_+2\r2.818\rwU1.540U63o540x63=34020z630U540630x54=34020\rv{|}~+M#0|6>5>4>3>0\r#J|@#i#G,\r4o#F#G4F#F#\rG4w#i#G#F\r#G08"Q0,i0\r2.456U30o456x30=13680\rv{|#J#J,EvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\r@#i? i#¡G\r8"#Q0,kK¢¡£¤¥\r@0i#G0\r¦U1.(1)\r@P\r`p?\r??123456\r??81216202428\r(2)4x9+4=40()(3)4+4_\r2.(1)1216(2)(10l)x4=36()\r(3)(n-l)x4\r3.180°+180o+180o+180o=720°\r4+2=6\rS|-&\nQ§\n0