009c - Naming Angles and Rays

Front

What is the vertex of an angle?

Back

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

Front

Name the vertex of the angle formed by rays SR and SQ.

Back

R

Front

What is a ray?

Back

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

Front

Identify the following: a ray, a line segment, and a line.

Back

A ray has one endpoint and extends infinitely; a line segment has two endpoints; a line extends infinitely in both directions.

Front

What is a right angle?

Back

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

Front

How do you name an angle?

Back

An angle can be named using its vertex and a point on each ray, such as Angle ABC.

Front

What is the difference between an angle and a ray?

Back

An angle is formed by two rays with a common endpoint (the vertex), while a ray is one of the two lines that form the angle.

Front

How many vertices does an angle have?

Back

An angle has one vertex.

Front

What is the notation for naming an angle?

Back

Angles are typically named using the symbol '∠' followed by the vertex name, e.g., ∠R.

Front

If angle U is formed by rays UT and UV, how is it named?

Back

It can be named as ∠TUV or ∠U.