梯形的梯子AA'‖EE',AB=BC=CD=DE,A'B'=B'C'=C'D'=D'E',AA'=0.5m,EE'=0.8m,求BB',CC',DD'的长

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梯形的梯子AA''‖EE'',AB=BC=CD=DE,A''B''=B''C''=C''D''=D''E'',AA''=0.5m,EE''=0.8m,求BB'',CC'',DD''的长梯形的梯子AA''‖EE'',AB=BC=CD=D

梯形的梯子AA'‖EE',AB=BC=CD=DE,A'B'=B'C'=C'D'=D'E',AA'=0.5m,EE'=0.8m,求BB',CC',DD'的长
梯形的梯子AA'‖EE',AB=BC=CD=DE,A'B'=B'C'=C'D'=D'E',AA'=0.5m,EE'=0.8m,求BB',CC',DD'的长

梯形的梯子AA'‖EE',AB=BC=CD=DE,A'B'=B'C'=C'D'=D'E',AA'=0.5m,EE'=0.8m,求BB',CC',DD'的长
bb'=0.575m
cc'=0.65m
dd'=0.725m
cc'是梯形aa'e'e中位线
cc'=(0.5+0.8)/2=0.65
bb'是梯形aa'c'c中位线
bb'=(0.5+0.65)/2=0.575
dd'是梯形cc'e'e中位线
dd'=(0.65+0.8)/2=0.725