angles

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

Identify a pair of vertical angles from the following: ∠COB and ∠AOD.

Back

∠COB and ∠AOD are a pair of vertical angles.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of a transversal and inside the two lines it intersects. They are equal when the lines are parallel.

Front

Identify a pair of alternate interior angles from the following: ∠3 and ∠7.

Back

∠3 and ∠7 are a pair of alternate interior angles.

Front

What tool is used to measure angles?

Back

A protractor is used to measure angles.

Front

How can you find the measure of an angle without a protractor?

Back

You can use geometric principles, such as the properties of triangles, parallel lines, and angle relationships.

Front

What is the measure of angle QRT if it is given as 135 degrees?

Back

Angle QRT measures 135 degrees.

Front

What is the measure of angle x if it is given as 186 degrees?

Back

Angle x measures 186 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

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.