Please watch and take notes, you may pause as needed to write the terms down
This is a Khan Academy video for points, lines, and planes.
Source: https://www.khanacademy.org/math/geometry/segments-and-angles/intro_euclid/v/lines--line-segments--and-rays?exid=points_lines_and_planes
discusses the idea of points, lines, and planes as being undefined and the terms such as collinear, coplanar.