Geometry Vocab

Front

What does the Exterior Angle Theorem state?

Back

The exterior angle of a triangle is equal to the sum of the two remote interior angles.

Tags

CCSS.8.G.A.5

Front

What is the intersection of two lines?

Back

A point.

Tags

CCSS.HSG.CO.A.1

Front

What does the Triangle Sum Theorem state?

Back

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

Tags

CCSS.8.G.A.5

Front

What is the set of all points called?

Back

Space.

Front

What are the two interior angles on opposite sides of a transversal called?

Back

Alternate interior angles.

Tags

CCSS.8.G.A.5

Front

What is a line?

Back

A straight one-dimensional figure that has no thickness and extends infinitely in both directions.

Tags

CCSS.4.G.A.1

Front

What is a plane?

Back

A flat two-dimensional surface that extends infinitely in all directions.

Tags

CCSS.HSG.CO.A.1

Front

What are corresponding angles?

Back

Angles that are in the same position on two parallel lines cut by a transversal.

Tags

CCSS.8.G.A.5

Front

What are consecutive interior angles?

Back

Interior angles on the same side of the transversal.

Tags

CCSS.8.G.A.5

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Tags

CCSS.4.G.A.1