Identifying Angle Relationships

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What are vertical angles?

Back

Vertical angles are angles that are opposite each other when two lines intersect and are always congruent (equal measures).

Front

What is the relationship between complementary angles?

Back

Complementary angles are two angles that add up to 90°.

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex.

Front

What is the sum of angles in a triangle?

Back

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

Front

What are congruent angles?

Back

Congruent angles are angles that have the same measure.

Front

What is the relationship between supplementary and complementary angles?

Back

Supplementary angles add up to 180°, while complementary angles add up to 90°.

Front

If two angles are vertical, what can we say about their measures?

Back

Vertical angles are always congruent (equal measures).

Front

What are the properties of adjacent and supplementary angles?

Back

Adjacent and supplementary angles share a common side and add up to 180°.

Front

What is the definition of complementary angles?

Back

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