有關beanequilateraltrian的精選大全

Infig.1,let beanequilateraltriangle,DandEbepointsonedge...
問題詳情:Infig.1,let beanequilateraltriangle,DandEbepointsonedgesABandACrespectively,FbeintersectionofsegmentsBEandCD,and,thenthemagnituderelationbetweenAdandCEis(   ) A.  B.  C.  D.indefinite...
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