What is a line?

A line is a long one-dimensional mark or a long path that goes till infinity.

What is a line segment?

A line segment is a long mark or a line that connects two specific points.

All line segments are lines but not all lines are line segments.

What is the difference between a line and a line segment?

A line is a long mark without any endpoints while a line segment is a long mark that has defined endpoints.

What is an angle?

An angle is a figure formed by two line segments or rays when they meet at a single point called the vertex. The 2 line segments are called the sides of the angle.

It is denoted by the degree sign that is º.