题目内容
如图,在△ABC中,AC>AB,点D在AC边上,(点D不与A、C重合),若再增加一个条件就能使△ABD∽△ACB,则这个条件可以是______.
连接BD,
若①∠ABD=∠ACB,
∵∠ABD=∠ACB,∠BAD=∠CAB,
∴△ABD∽△ACB.
若②∠ADB=∠ABC,
∵∠ADB=∠ABC,∠BAD=∠CAB,
∴△ABD∽△ACB.
若③
=
,
∵
=
,∠BAD=∠CAB,
∴△ABD∽△ACB.
若①∠ABD=∠ACB,
∵∠ABD=∠ACB,∠BAD=∠CAB,
∴△ABD∽△ACB.
若②∠ADB=∠ABC,
∵∠ADB=∠ABC,∠BAD=∠CAB,
∴△ABD∽△ACB.
若③
AB |
AD |
AC |
AB |
∵
AB |
AD |
AC |
AB |
∴△ABD∽△ACB.
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