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 the vertex of an angle?

Back

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

Front

What is an acute angle?

Back

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

Tags

CCSS.4.G.A.1

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

How do you identify an acute angle?

Back

An acute angle can be identified as it is sharp and smaller than a right angle.

Tags

CCSS.4.G.A.1

Front

How do you identify a right angle?

Back

A right angle can be identified by its square corner, often marked with a small square.

Tags

CCSS.4.G.A.1

Front

How do you identify an obtuse angle?

Back

An obtuse angle can be identified as it is wider than a right angle.

Tags

CCSS.4.G.A.1

Front

What is a ray in geometry?

Back

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

Tags

CCSS.4.G.A.1

Front

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

Back

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

Tags

CCSS.4.G.A.1