如图所示,求角a+角b+角c+角d+角e+角f+角g+角h+角k的度数

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如图所示,求角a+角b+角c+角d+角e+角f+角g+角h+角k的度数如图所示,求角a+角b+角c+角d+角e+角f+角g+角h+角k的度数如图所示,求角a+角b+角c+角d+角e+角f+

如图所示,求角a+角b+角c+角d+角e+角f+角g+角h+角k的度数
如图所示,求角a+角b+角c+角d+角e+角f+角g+角h+角k的度数

如图所示,求角a+角b+角c+角d+角e+角f+角g+角h+角k的度数

如图,分别延长DE、MK与BC相交
则：
∠A+∠B=∠1
∠H+∠K=∠2
∠C+∠D=∠3
∠E+∠F=∠4
所以,∠A+∠B+∠C+∠D+∠E+∠F+∠G+∠H+∠K=∠1+∠2+∠3+∠4+∠G
=五边形的内角和
=(5-2)*180°
=540°

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