1.1 Points, Lines and Planes

Front

What is a Plane?

Back

A plane is a flat surface that extends infinitely in all directions and is named by a single letter (e.g., plane m) or by three non-collinear points (e.g., plane ABC).

Front

What is a Line?

Back

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

Front

What is a Point?

Back

A point is a precise location in space that has no dimensions (length, width, or height) and is usually represented by a capital letter.

Front

How is a Plane represented in geometry?

Back

A plane is often represented as a four-sided figure resembling a tabletop or a parallelogram.

Front

What does it mean that a Line has no thickness?

Back

It means that a line only has length and extends infinitely without any width or height.

Front

How do you name a Point in geometry?

Back

A point is usually named with a capital letter, such as point A.

Front

What are the characteristics of a Point?

Back

A point has no length, width, or height; it is simply a location in space.

Front

Can a Plane be defined by two points?

Back

No, a plane cannot be defined by just two points; it requires at least three non-collinear points.

Front

What is the relationship between Points, Lines, and Planes?

Back

Points are the most basic elements, Lines are made up of points extending in one dimension, and Planes are made up of lines extending in two dimensions.

Front

What is an example of a Plane in real life?

Back

A flat tabletop or a sheet of paper can be considered examples of a plane.