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平面上点P与不共线三点A.B.C满足关系式:PA+PB+PC=AB.则下列结论正确的是(
平面上点P与不共线三点A.B.C满足关系式:PA+PB+PC=AB.则下列结论正确的是(
发布时间:2021-02-20 14:23:33
(2007•武汉模拟)平面上点P与不共线三点A、B、C满足关系式:
PA+
PB+
PC=
AB,则下列结论正确的是( )
A.P在CA上,且
CP=2
PA
B.P在AB上,且
AP=2
PB
C.P在BC上,且
BP=2
PC
D.P点为△ABC的重心
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