Points, Lines, and Rays

Front

What is a line?

Back

A line is straight and extends in both directions forever.

Front

What is a point?

Back

A point is an exact location in space.

Front

What are parallel lines?

Back

Parallel lines are lines that never intersect and are always the same distance apart.

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

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

How do you name a ray?

Back

A ray is named using its starting point and another point on the ray, for example, Ray AB.

Front

What does intersecting lines mean?

Back

Intersecting lines are lines that cross each other at one point.

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 symbol for a line?

Back

The symbol for a line is usually represented by two arrowheads on both ends.