Angle Relationships

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common vertex and a side but do not overlap.

Front

What are vertical angles?

Back

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

Front

What are complementary angles?

Back

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

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What is a linear pair of angles?

Back

A linear pair of angles consists of two adjacent angles that form a straight line, adding up to 180 degrees.

Front

What is the equation to find the missing angle if one angle is 125° and the other is 36°?

Back

Front

If angle ∠ABD is 67°, what is ∠DBC if they are supplementary?

Back

∠DBC = 180° - 67° = 113°.

Front

What is the relationship between alternate interior angles?

Back

Alternate interior angles are equal when two parallel lines are cut by a transversal.

Front

What are corresponding angles?

Back

Corresponding angles are the angles that are in the same position on two parallel lines in relation to a transversal. They are equal.

Front

What is the sum of angles in a triangle?

Back

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