Protractor Basic geometry

Front

What is a protractor?

Back

A protractor is a tool used to measure angles in degrees.

Front

What is the measurement of a right angle?

Back

90 degrees.

Front

What type of angle measures less than 90 degrees?

Back

Acute angle.

Front

What type of angle measures more than 90 degrees but less than 180 degrees?

Back

Obtuse angle.

Front

What do we call an angle that measures exactly 180 degrees?

Back

Straight angle.

Front

What is a line segment?

Back

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

Front

What is a ray?

Back

A ray is a part of a line that starts at one point and extends infinitely in one direction.

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 the term for an angle that measures exactly 90 degrees?

Back

Right angle.

Front

What is a plane in geometry?

Back

A plane is an endless flat surface that extends infinitely in all directions.