Lines and Angles Flashcard

Front

What are acute angles?

Back

Acute angles are angles that measure less than 90 degrees.

Front

What is a line?

Back

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

Front

What are intersecting lines?

Back

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

Front

What is the measurement of a right angle?

Back

A right angle measures exactly 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 are parallel lines?

Back

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

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 is a straight angle?

Back

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

Front

How do you measure an angle?

Back

You measure an angle using a protractor.

Front

What is a line segment?

Back

A line segment is a part of a line that has two endpoints.