4th Grade Geometry Vocabulary

Front

What is a ray?

Back

A part of a line that begins at one endpoint and continues without end in one direction.

Front

What is a point?

Back

A point is a single dot.

Front

What are parallel lines?

Back

Lines that run in the same direction and never meet.

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint.

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 does it mean for lines to intersect?

Back

To intersect means that two lines cross each other at a point.

Front

What is a degree in geometry?

Back

A degree is a unit of measurement for angles.

Front

What is an example of intersecting lines?

Back

Two streets that cross each other.