Four points are always coplanar if:Check all that apply.A.all of them are collinear.B.they lie in the same plane.C.three of them are coplanar.D.they are not in the same plane.SUBMITarrow_backPREVIOUS
Question
Four points are always coplanar if:Check all that apply.A.all of them are collinear.B.they lie in the same plane.C.three of them are coplanar.D.they are not in the same plane.SUBMITarrow_backPREVIOUS
Solution
The correct answers are:
A. All of them are collinear. - This is true because if all points are on the same line, they are by definition in the same plane.
B. They lie in the same plane. - This is the definition of coplanar. If four points lie in the same plane, they are coplanar.
C. Three of them are coplanar. - This is not necessarily true. Just because three points are coplanar does not mean that a fourth point is also in that plane.
D. They are not in the same plane. - This is false. If the points are not in the same plane, they are not coplanar.
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