因为:bc/b'c=ab/a'b'=cd/c'd'=da/d'a'=2/3.
所以b'c'=(3/2)bc a'b'=(3/2)ab
c'd'=(3/2)cd d'a'=(3/2)da
四边形a'b'c'd'的周长=b'c'+a'b'+ c'd'+d'a'
=bc+ab+cd+da
=60厘米.应该是90吧
在四边形abcd和四边形a'b'c'd'中已知bc/b'c=ab/a'b'=cd/c'd'=da/d'a'=2/3四边形abcd的周长是60厘米求四边
在四边形abcd和四边形a'b'c'd'中已知bc/b'c=ab/a'b'=cd/c'd'=da/d'a'=2/3四边形abcd的周长是60厘米求四边
在四边形abcd和四边形a'b'c'd'中已知bc/b'c=ab/a'b'=cd/c'd'=da/d'a'=2/3四边形abcd的周长是60厘米求四边形a'b'c'd'的周长
在四边形abcd和四边形a'b'c'd'中已知bc/b'c=ab/a'b'=cd/c'd'=da/d'a'=2/3四边形abcd的周长是60厘米求四边形a'b'c'd'的周长
数学人气:656 ℃时间:2020-05-29 19:17:27
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