4.10 - Geometric Lines

Front

What is a line?

Back

A collection of points extending infinitely in both directions. It has no endpoints.

Front

What is a ray?

Back

Part of a line. It has one endpoint and extends infinitely in one direction.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What does perpendicular mean?

Back

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

Front

What is an angle?

Back

Formed by two rays that share a common endpoint.

Front

What is a vertex?

Back

The point where two lines or rays meet to form an angle.

Front

How many degrees are in a right angle?

Back

90 degrees.

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

A line is often represented by two points with a line above them, like AB.

Front

What is a straight line?

Back

A line that does not curve and has no bends.