A definition, perhaps.
A plane
Three.
Three
yes. For example the corners of a square, or on the circumference of a circle.
Three noncollinear points ( A ), ( B ), and ( C ) determine exactly three lines: line ( AB ), line ( BC ), and line ( AC ). Each pair of points defines a unique line, and since the points are noncollinear, no two lines coincide. Thus, the total number of lines determined by points ( A ), ( B ), and ( C ) is three.
A plane
3
3
Three.
Three
what is noncollinear because it was a point
yes. For example the corners of a square, or on the circumference of a circle.
Three noncollinear points ( A ), ( B ), and ( C ) determine exactly three lines: line ( AB ), line ( BC ), and line ( AC ). Each pair of points defines a unique line, and since the points are noncollinear, no two lines coincide. Thus, the total number of lines determined by points ( A ), ( B ), and ( C ) is three.
You have to have three or more points to have non-colinear points because any two points determine a line. Noncolinear are NOT on the same line.
No. For example, consider the vertices of a tetrahedron (triangle-based pyramid).
noncollinear
Since collinear is points that lie on the same line, and you need two points to form a line so those 2 points are collinear. So the opposite of that is noncollinear.