Points, Lines and Planes

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 and includes all the points between them.

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 are parallel lines?

Back

Parallel lines are lines in the same plane that never intersect, no matter how far they are extended.

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Front

What does collinear mean?

Back

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

Front

What is a plane?

Back

A plane is a flat two-dimensional surface that extends infinitely in all directions.

Front

What are coplanar points?

Back

Coplanar points are points that lie on the same plane.

Front

What is the difference between a point and a line?

Back

A point is a specific location in space with no dimensions, while a line is a one-dimensional figure that extends infinitely.

Front

What is the definition of an angle?

Back

An angle is formed by two rays that share a common endpoint, called the vertex.