①动点P满足 =
+
+
,则△ABC的重心一定在满足条件的P点集合中;
②动点P满足 =
+λ(
+
)(λ>0),则△ABC的内心一定在满足条件的P点集合中;
③动点P满足 =
+λ(
+
)(λ>0),则△ABC的重心一定在满足条件的P点集合中;
④动点P满足 =
+λ(
+
)(λ>0),则△ABC的垂心一定在满足条件的P点集合中;
⑤动点P满足 =
+λ(
+
)(λ>0),则△ABC的外心一定在满足条件的P点集合中.