4th Geometry Vocabulary Pre-test

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is a line segment?

Back

A line segment is part of a line and is named by its two endpoints.

Front

True or False: A ray has only one endpoint and continues infinitely in the other direction.

Back

True

Front

What is an example of a line?

Back

A line is a straight path that extends infinitely in both directions.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet 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 vertex?

Back

A vertex is a point where two or more lines meet.