1. What exists solely as a place-holder in space but doesn't have size?

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2. What exists as a set of only collinear points that extend endlessly in opposite directions?

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3. True or False: Three non-collinear points can lie in the same plane.

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4. True or False: A plane exists only in a finite space.

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5. True or False: A line can only intersect a plane in exactly one point.

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6. True or False: If two points are coplanar, then they are collinear.

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7. True or False: A set of points that forms a perfectly flat boundless surface is called a line.

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