Practice: Points, Lines & Planes (part 1)

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

Back

The notation is \( \overrightarrow{AB} \).

Front

Define collinear points.

Back

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

Front

What is a line segment?

Back

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

Front

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

Back

The notation is \( \overline{AB} \).

Front

What is a plane in geometry?

Back

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

Front

How do you denote a plane using points?

Back

A plane can be denoted by three non-collinear points, for example, Plane ABC.

Front

What does it mean for points to be coplanar?

Back

Points are coplanar if they lie on the same plane.

Front

What is the difference between collinear and coplanar points?

Back

Collinear points lie on the same line, while coplanar points lie on the same plane.

Front

What is the notation for a line?

Back

A line can be denoted by two points on it, for example, line AB is denoted as \( \overleftrightarrow{AB} \).