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ThankyouThankyou Thankyou过点G作GH//AB,又因为AB//CD,所以GH//CD∵GH//AB∴角AEG+角EGH=180°（两直线平行,同旁内角互补）同理可得,

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过点G作GH//AB,又因为AB//CD,所以GH//CD
∵GH//AB
∴角AEG+角EGH=180°（两直线平行,同旁内角互补）
同理可得,角CFG+角HGF=180°
又因为角AEG为100°,角CFG为150°
可求得角EGH=80°,角HGF=30°
而角EGF=角EGH+角HGF=80°+30°=110°

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