4th Grade Geometry Vocab

Front

What are perpendicular lines?

Back

Lines that intersect at a right angle (90 degrees).

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What is a line?

Back

A straight path that extends infinitely in both directions.

Tags

CCSS.4.G.A.1

Front

What is a line segment?

Back

A part of a line that has two endpoints.

Tags

CCSS.HSG.CO.A.1

Front

What is a point in math?

Back

An exact location in space, represented by a dot.

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

An angle that measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

What are parallel lines?

Back

Lines that never intersect and are always the same distance apart.

Tags

CCSS.HSG.CO.A.1

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is a vertex?

Back

The point where two lines or edges meet.

Front

What is a triangle?

Back

A polygon with three sides and three angles.

Tags

CCSS.2.G.A.1

Front

What is a quadrilateral?

Back

A polygon with four sides and four angles.

Tags

CCSS.2.G.A.1