Angle Pairs

Front

What are adjacent angles?

Back

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

Front

What is a linear pair of angles?

Back

A linear pair of angles consists of two adjacent angles whose non-common sides form a straight line. The sum of the angles in a linear pair is always 180 degrees.

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

If angle 4 measures 70 degrees, what is the measure of angle 2 if they are part of a linear pair?

Back

Angle 2 also measures 70 degrees because it is adjacent to angle 4, and they form a linear pair.

Front

How do you identify adjacent angles in a diagram?

Back

Adjacent angles can be identified by looking for two angles that share a vertex and a side, without overlapping.

Front

What is the relationship between the angles in a linear pair?

Back

The angles in a linear pair are supplementary, meaning their measures add up to 180 degrees.

Front

Can two angles be both adjacent and vertical?

Back

No, two angles cannot be both adjacent and vertical. Adjacent angles share a side, while vertical angles are opposite each other and do not share a side.

Front

What is the sum of the measures of two angles that form a linear pair?

Back

The sum of the measures of two angles that form a linear pair is always 180 degrees.

Front

What is the definition of complementary angles?

Back

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

Front

What is the definition of supplementary angles?

Back

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