Mathematics
Junior High
Resolved
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B
A
D
F
W
E
C
図△ABCと△EFDにおいて
中連絡定理より
BC:DF=2:1…①
AB:EF=2:13
AC: E12=2:1.⑤
①②③より
AB=EF=BCDE=AC:ED
=2:1.9
④より、3組の辺の比が
すべて楽しいから
△ABCDEFD
Answers
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