Points, Lines & Planes

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 has two 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 collinear?

Back

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

Front

What does it mean for points to be coplanar?

Back

Coplanar points are points that lie on the same plane.

Front

What is the difference between parallel and perpendicular lines?

Back

Parallel lines never intersect and are always the same distance apart, while perpendicular lines intersect at a right angle (90 degrees).

Front

How many points are needed to define a line?

Back

Two points are needed to define a line.

Front

What is the definition of a plane in geometry?

Back

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

Front

If point A and point B are on line p, what can we say about them?

Back

Points A and B are collinear because they lie on the same line.