**Naming Angles

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 an acute angle?

Back

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

Front

How do you identify the vertex of an angle?

Back

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

Front

What is the measure of a right angle?

Back

A right angle measures exactly 90 degrees.

Front

What is the sum of the angles in a triangle?

Back

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

Front

How do you name an angle using its vertex?

Back

An angle can be named using its vertex and a point on each ray, for example, angle ABC where B is the vertex.

Front

What is a straight angle?

Back

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

Front

What is the difference between complementary and supplementary angles?

Back

Complementary angles are two angles that add up to 90 degrees, while supplementary angles add up to 180 degrees.

Front

How can you determine if an angle is acute, obtuse, or right?

Back

You can determine the type of angle by measuring it: less than 90 degrees is acute, exactly 90 degrees is right, and more than 90 degrees but less than 180 degrees is obtuse.

Front

What is the notation for angles?

Back

Angles are often denoted by the symbol '∠' followed by the vertex and points on the rays, e.g., ∠ABC.