Geometry: Flashcard One

Front

A straight angle is ______.

Back

An angle that forms a straight line.

Front

What is an angle?

Back

A figure formed by two rays that share the same endpoint.

Front

What is a protractor?

Back

A tool that is used to measure and draw angles.

Front

A unit angle is ________.

Back

An angle that cuts off 1/360 of a circle and measures 1 degree.

Front

What is a point?

Back

An exact location in space.

Front

What is a ray?

Back

A part of a line that has one endpoint and continues forever in one direction.

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

An angle that is greater than 90 degrees but less than 180 degrees.

Front

What is an acute angle?

Back

An angle that is less than 90 degrees.