Unit 1: Points, Lines, Planes & Segments

Front

What is a line?

Back

A line is straight and extends in both directions forever.

Front

What does it mean for points to be collinear?

Back

Collinear points lie on the same straight line.

Front

What does it mean for points to be coplanar?

Back

Coplanar points lie on the same plane.

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 line segment?

Back

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

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint.

Front

What do we call the point where two lines intersect?

Back

The point of intersection.

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 definition of a point?

Back

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

Front

How can you identify collinear points?

Back

Collinear points can be identified if they lie on the same straight line.