Naming Angles

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint called the vertex.

Front

What is a vertex in an angle?

Back

The vertex is the point where two rays meet to form an angle.

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 straight angle?

Back

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

Front

How do you name an angle?

Back

An angle can be named using three points, with the vertex point in the middle, such as angle ABC.

Front

Back

Front

What is the difference between a ray and a line segment?

Back

A ray has one endpoint and extends infinitely in one direction, while a line segment has two endpoints.

Front

What is the sum of angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.