数学
如图,已知△ABC∽△DEF,求未知边x,y的长度.

2019-04-10

如图,已知△ABC∽△DEF,求未知边x,y的长度.
优质解答
∵△ABC∽△DEF,
AB
DE
=
AC
DF
=
BC
EF
,即
7
y
=
12
x
=
8
4
,解得x=6,y=
7
2
∵△ABC∽△DEF,
AB
DE
=
AC
DF
=
BC
EF
,即
7
y
=
12
x
=
8
4
,解得x=6,y=
7
2
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