No. A plane is infinite.
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That would be a polygon.
No, you could define a plane as comprising only two lines.
Three
Three.
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No, only one UNIQUE Plane.
No, 2 points define a line, 3 points define a plane.
No, two points define a line. It takes three points to define a plane.
That would be a polygon.
4 points define a plane.
Three. That is why three-legged stools are always stable--the ends of their legs define a plane.
The endpoint has no dimension. It has no endpoint.
To define the picture plane the two dimensional artist must establishthe borders of the picture plane. The border of the picture plane will determine the type of the picture plane according to the two dimensional artist.
They define one plane. A line is defined by two points, and it takes three points to define a plane, so two points on the line, and one more point not on the line equals one plane.
There are only three endpoint given and these are not sufficient to define a segment of a line.
Only if the 3 points are all in the same line. Then there are an infinite number of planes.If the 3 points are not all in the same line, then there is only one unique plane that contains them.That's what "define" means.