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{{ printedBook.courseTrack.name }} {{ printedBook.name }} A plane can be named using any three non-collinear points contained in the plane. Therefore, we are interested in all the points contained in plane.

There are four points that lie in plane: $Q,$ $S,$ $R,$ and $T.$ However, $Q,$ $S,$ and $R$ are collinear, so we can't use these to name the plane. Instead, we can use $T$ and any two of the other three points. Two examples for a correct name are: $QSTandSRT.ā$