AB=5/2 A'B' AB-A'B'=3/2 A'B'
BC=5/2 B'C' BC-B'C'=3/2 B'C'
CA=5/2 C'A' CA-C'A'=3/2 C'A'
60=3/2 (A'B'+B'C'+C'A')
A'B'C'周长为60*2/3=40
ABC周长为40+60=100
在三角形ABC和三角形A'B'C'中,AB/A'B'=BC/B'C'=CA/C'A'=5/2,其周长的差是60cm,则三角形ABC和三角形A'B'C'的周长分别是多少?
在三角形ABC和三角形A'B'C'中,AB/A'B'=BC/B'C'=CA/C'A'=5/2,其周长的差是60cm,则三角形ABC和三角形A'B'C'的周长分别是多少?
数学人气:992 ℃时间:2020-04-08 01:27:34
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