There exists only one such that the points are collinear.

For every the points are not coplanar.

There exists only one such that the points are not coplanar.

There exists a unique such that the vectors are coplanar.

For every the vectors are linearly independent.

There exists a unique such that the vectors are linearly independent.

For all points , the triangle of vertices , and has area equal to .

If , then , and are collinear.

There exists a point such that , and are collinear.

There does not exist a line such that and .

None of the other statements is correct.

and are orthogonal.

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The lines are skew.

None of the other statements is correct.

The lines intersect at exactly one point.

The lines are parallel and distinct.

The line contains a diameter of .

The center of has coordinates .

has radius equal to .

is a circle of maximal radius of the sphere of equation .

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contains more than one point.

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contains exactly one point.

has radius .

passes through the point of coordinates .

The line contains a diameter of .

The center of has coordinates .