Angles - Complementary, Supplementary, Adjacent, Vertical

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

Define adjacent angles.

Back

Adjacent angles are angles that have a common vertex and a common side, and 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

If one angle measures 34°, what is the measure of its complementary angle?

Back

The complementary angle measures 56° (90° - 34°).

Front

If two angles are supplementary and one measures 72°, what is the measure of the other angle?

Back

The other angle measures 108° (180° - 72°).

Front

What is the sum of the measures of two adjacent angles?

Back

The sum of the measures of two adjacent angles can be any value, depending on their individual measures.

Front

How do you find the value of x in an equation involving angles?

Back

To find the value of x, set up an equation based on the relationships between the angles (complementary, supplementary, etc.) and solve for x.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal in measure.

Front

If two angles are adjacent and one measures 45°, what can you say about the other angle if they are supplementary?

Back

The other angle measures 135° (180° - 45°).