Lines and Angles

Front

What is an acute angle?

Back

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

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 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 is a point in geometry?

Back

A point is a single dot that shows a location and has no size.

Front

What is a line in geometry?

Back

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

Front

What is a line segment?

Back

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

Front

What is a ray in geometry?

Back

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

Front

What do we call the space between two lines that meet at a point?

Back

The space between two lines that meet at a point is called an angle.

Front

How do you measure an angle?

Back

An angle is measured in degrees using a protractor.

Front

What is a straight angle?

Back

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