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Why does a line have to have 2 points?
In geometry, a line is somply a collection of points. However, when naming a line, a line is nemed using two of its points.
How is naming a ray different from naming a line?
There is no intrinsic difference. Either can be named using the names of any two points on them, or using any letter or symbol of any alphabet - including symbols that you have made up.
Is points B and C are collinear?
If points B and C are collinear, it means that they lie on the same straight line. To determine if points B and C are collinear, you would need to know the coordinates or have a visual representation of the points.
Are 2 points always collinear?
yes in mathematical world every solution have its graphical representation and its common sense that two points on a graph form only one line.......so two points are always colloinear.....!
How can you name a line and a plane?
Here is one option: 2 points uniquely define a line so a line can be named after any two points that belong to it. Similarly, three points that are not collinear (all in the same line) uniquely define a plane so a plane can be defined by naming any three non-collinear points in it. There are different - though related - forms in coordinate geometry or in vector algebra.
