Geometry Vocabulary

Front

What is a supplementary angle?

Back

Two angles that add up to 180 degrees.

Front

What is a complementary angle?

Back

Two angles that add up to 90 degrees.

Front

What are vertical angles?

Back

Congruent angles formed opposite each other by the intersection of two lines.

Front

What does the symbol '≅' represent?

Back

Congruent.

Front

What is the definition of acute angles?

Back

Angles that measure less than 90 degrees.

Front

What is the definition of obtuse angles?

Back

Angles that measure more than 90 degrees but less than 180 degrees.

Front

What is a linear pair of angles?

Back

Two adjacent angles that form a straight line, adding up to 180 degrees.

Front

What is the definition of adjacent angles?

Back

Two angles that share a common side and a common vertex.

Front

What is the relationship between parallel lines and angles?

Back

When a transversal crosses parallel lines, it creates corresponding angles that are equal.

Front

What is the definition of a right angle?

Back

An angle that measures exactly 90 degrees.