The Geometric Concepts
The line segment: Mark two points on a sheet of paper which is a representation of a plane in geometry. The straight line: There is an infinite number of points on the straight line, the arrows show that the line can be extended without limit on both sides The ray: Ray AB is written as AB where the ray starts at A and continuous without end from A through B in a straight linr so it is infinitely long. Thus its length is not determined
The angle :