如图5,将四边形ABCD的四条边分别延长一段,得∠CBE、∠BAH、∠ADG、∠DCF,那么,四个角的和等于(W/G5Q(I6v2z8_7M6C*Z2x;~*\度。'[.{;U+g7^3r8B7E
'[.{;U+g7^3r8B7E