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如图BC//AD,角1=角e,若角a等于一百度,求角c的度数
如图BC//AD,角1=角e,若角a等于一百度,求角c的度数
发布时间:2021-02-27 11:09:18
如图BC//AD,角1=角e,若角a等于一百度,求角c的度数
网友回答
因为角1等于角E
那2个对项角相等
所以角a等于角ADE
因为角a100度
所以角ADE100度
因为角ADC+角ADE等于180度
所以角ADC80度
因为BC平行于AD
所以角ADC+角C=180度
所以角C等于100度
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