4.G.1

Front

What are parallel lines?

Back

Lines that never meet and are always the same distance apart.

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 a ray?

Back

A part of a line that has one endpoint and extends infinitely in one direction.

Front

What is a point in geometry?

Back

A location in space that has no size or dimension.

Front

What are intersecting lines?

Back

Lines that cross each other at one point.

Front

What is an angle?

Back

A figure formed by two rays with a common endpoint called the vertex.

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 a vertex?

Back

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

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.