Flashcard #1: Points, Lines, & Planes

Front

What is a point in geometry?

Back

A point is a specific location in space that has no dimensions, represented by a dot.

Front

What is a line in geometry?

Back

A line is a straight one-dimensional figure that extends infinitely in both directions, having 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 is a plane in geometry?

Back

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

Front

What does it mean for points to be collinear?

Back

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

Front

How do two planes intersect in geometry?

Back

Two planes intersect in a line.

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 geometric figure?

Back

A geometric figure is a set of points that form a particular shape or structure in space.

Front

What is the significance of naming a ray?

Back

Naming a ray involves identifying its starting point and the direction it extends, typically denoted as @@ ightarrow @@.