Intro to Points, Lines and Planes

Front

What is a point?

Back

A point is a specific location in space that has no size or dimension.

Front

What is a line?

Back

A line is a straight one-dimensional figure that extends infinitely in both directions and has no endpoints.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.

Front

What is a ray?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What is a plane?

Back

A plane is a flat surface made up of points that has two dimensions and extends without end.

Front

How many points are needed to define a line?

Back

At least 2 points are needed to define a line.

Front

What does it mean for points to be collinear?

Back

Collinear points are points that lie on the same straight line.

Front

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

Back

A line extends infinitely in both directions, while a line segment has two endpoints.

Front

What is the notation for a line segment between points A and B?

Back

The notation is AB with a line segment symbol above it.

Front

What is the notation for a ray starting at point A and passing through point B?

Back

The notation is AB with a ray symbol above it, starting at A.