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21 votes
Which of the following determines a plane?A. a straight lineB. three collinear pointsC. line and a point on the lineD. 3 non-collinear points I need help finding the answer.

User Moarboilerplate
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1 Answer

21 votes
21 votes

Three points must be noncollinear to determine a plane. (Option D)

Step-by-step explanation:

A straight line doesn't define a plane because a plane must be 2-dimensional

Three collinear points are three points on the same line. This also is insufficient in determining a plane.

A-line and a point on the line. This is similar to having a straight line.

User Zhihong
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