Points Lines Planes Quick Review

Front

What is a point in geometry?

Back

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

Front

Define a line in geometry.

Back

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

Front

What is a line segment?

Back

A line segment is a part of a line that is bounded by two distinct endpoints.

Front

What is a ray in geometry?

Back

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

Front

What does it mean for points to be coplanar?

Back

Points are coplanar if they lie on the same plane.

Front

What does it mean for points to be collinear?

Back

Points are collinear if they lie on the same straight line.

Front

What is a plane in geometry?

Back

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

Front

Give an example of three collinear points.

Back

Points A, B, and C are collinear if they lie on the same line.

Front

What is the relationship between a line and a plane?

Back

A line can intersect a plane at a point, or it can lie entirely within the plane.

Front

How can you identify a line segment?

Back

A line segment can be identified by its two endpoints.